phenol does not react with NaHCO3 , phenol solubility in water is very less about 8g in 100mL of water , so it will be present in organic layer (methylene chloride) , methylene chloride has a density of 1.33g/mL greater than water so it will be below layer in which phenol is present.
What is the function of separatory funnel?Immiscible liquids are separated using a separatory funnel, or sep funnel. Two layers appear in a separatory funnel when two immiscible liquids are added. The lower layer will be made up of the denser solvent. Most halogenated solvents are less dense than water, but most non-halogenated solvents are.
A separating funnel is used by adding the two phases and the mixture to be separated via the top while keeping the stopcock at the bottom closed. After then, the funnel is shut and gently shaken by being inverted several times. If the two solutions are combined too vigorously, emulsions will form.
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what is the volume in liters of 3.75 moles of o2 gas
The volume of 3.75 moles of oxygen gas at STP is 84.05L.
How to calculate volume?The volume of a gas can be calculated using the ideal gas law equation as follows:
PV = nRT
Where;
P = pressureV = volumen = number of molesR = gas law constantT = temperatureAt standard temperature and pressure (STP), the temperature and pressure of an ideal gas is 273K and 1 atm respectively.
1 × V = 3.75 × 0.0821 × 273
V = 84.05L
Therefore, 84.05L is the volume of the ideal oxygen gas.
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You examined the effects of heat on equilibrium in part iv. Was the reaction you observed endo- or exo- thermic? does heat act as a reactant or product? what happened when you removed heat by placing the solution in the ice bath? what would you expect to happen if you were to add heat?.
1) The reaction is exothermic and heat is a product
2) The color would turn to pink.
What is an endothermic reaction?Let us recall that an endothermic reaction is one in which the increase in the temperature of the system would drive the forward reaction. This implies that the equilibrium would shift to the right when the set up is heated. Since the color of the solution changes to blue when heated hence the reaction is exothermic.
If you removed heat by placing the solution in the ice bath, we can see that we have removed the heat thus we expect that the reverse reaction would take place and the color would change to pink.
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What discovery proved Mendeleev's periodic table to be correct and Newlands' to be
wrong?
The discovery of protons and isotopes
The discovery of oxygen and nitrogen
The discovery of electron shells
The discovery of atomic weight
0/1
Answer: The discovery of protons and isotopes
Explanation: Mendeleev's arrangement by changing the criteria by which elements were arranged and assigned atomic numbers. Mendeleev arranged the periodic table based on the atomic mass of an atom of an element and its chemical properties.
can someone help me please?
What pressure will be required for neon at 30°C to have the same density as nitrogen at 20°C and 1.0 atm?
1.5 atm pressure will be required for neon at 30°C to have the same density as nitrogen at 20°C and 1.0 atm.
What is the theory of the ideal gas law?The relationship between a gas's pressure P, volume V, and temperature T in the range of low pressures and high temperatures, when the gas's molecules move virtually independently of one another, is known as the ideal gas law, also known as the perfect gas law.
Briefing:T[tex]_N_e[/tex] =30⁰C=(30+273)K=303K
T[tex]_N_2[/tex] =20⁰C=(20+273)K=293K
P[tex]_N_2[/tex] =1.0atm
Ideal gas constant - R=0.0821L⋅atm/ K⋅ mol
The molar mass of
Neon - M[tex]_N_e[/tex]=20.18g/mol
Nitrogen - M[tex]_N_2[/tex] =2⋅14.007g/mol=28.014g/mol
Determine the pressure P[tex]_N_e[/tex] required for neon at 30⁰C to have the same density (d) as nitrogen at 20⁰C.
d = m/V
We know that
n = m/M
Using the ideal gas law, we get
PV = nRT
PV = m/M *RT
Since
PM/RT = m/V =d
d = PM/RT
d= [tex]\frac{P_{N_2} M_{N_2}}{R T_{N_2}}[/tex]
d = 1.0 atm * 28.014 g/mol/0.0821L atm/K mol 293K
d = 1.2 g//L
Since both gases have the same density, we can calculate the pressure of neon gas, using
[tex]d=\frac{P_{N e} M_{N e}}{R T_{N e}}[/tex]
[tex]P_{N e}=\frac{d R T_{N e}}{M_{N e}}[/tex]
[tex]P_{N e}[/tex]=1.2g/L . 0.0821L . atm/K.mol.303 K/20.18 g/mol
[tex]P_{N e}[/tex]=1.5 atm
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in which situation is nitrogenase expression up-regulated? choose one: a. low nh4 and low o2 conditions b. high nh4 and high o2 conditions c. low nh4 and high o2 conditions d. high nh4 and low o2 conditions
Low NH₄ and high O₂ conditions are required for nitrogenase expression up-regulated.
What is nitrogenase expression regulated by?control over the transcription of nitrogenase. The transcriptional control of nitrogen fixing is influenced by the oxygen and ammonium levels in the surrounding air. Because the nitrogenase components are oxygen labile, it is advantageous for bacteria to limit transcription when oxygen concentrations are high.
Reversible mono-ADP-ribosylation of the Fe protein, one of nitrogenase's components, regulates the enzyme's activity. The electrons necessary for the reduction of molecular nitrogen are supplied by this protein to the MoFe protein, the other component.
The enzyme nitrogenase turns nitrogen into ammonia. Some prokaryotes include it. Biological nitrogen fixation is the conversion of dinitrogen to ammonia by living things. The enzyme nitrogenase facilitates the transformation of nitrogen into ammonia.
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Which of the following statements about thermal energy is true? As you hold a cup of hot water, the heat moves to your hand. As you hold a cup of cold milk, your hand cools the milk. As you hold a cup of hot water your hands cool the water. As you hold a glass of cold milk, the cold travels to your hand.
Answer: As you hold cold milk.... travels to your hand
Explanation:
Cold and hot are compared to your own body temperature. So yeah that's kind of off topic but yeah. Anyways, to the explanation: so, this can be tested--obviously--by literally doing what the statement says. after you are done holding the milk, you will notice your hand is cold. This is because the milk is cooling down your hand to balance out the temperatures.
help please!
What pressure will be required for neon at 30°C to have the same density as nitrogen at 20°C and 1.0 atm?
Which of the following is an example of demonstrative evidence?
O Gun
O Fingerprint
O Handwritten note
O Model of crime scene
i have 23.45g of AlBr3, and 34.57g of na2o, which of these substances is the limiting reagent
Answer
AlBr₃ is the limiting reactant
Explanation
Mass of AlBr₃ = 23.45 g
Mole of AlBr₃ = Mass/molar mass = 23.46 g/266.69 g/mol = 0.08797 mol
Mass of Na₂O = 34.57 g
So mole of Na₂O = mass/molar mass = 34.57 g/61.9789 g/mol = 0.5578 mol
Mole ratio of AlBr₃ to Na₂O = (0.08797/0.08797) : (0.05578/0.08797) = 1:6
To know the limiting reactant, write a chemical equation for the reaction and compare the reactant mole ratio in the equation with the mole ratio above.
2AlBr₃ + 3 Na₂O -----> Al₂O₃ + 6NaBr
Mole ratio in the equation = 2:3
Comparing the mole ratio, AlBr₃ will be the first to be completely consumed.
Therefore, AlBr₃ is the limiting reactant
a beaker containing 50.0 ml of 0.50 m naoh is titrated using a burette containing a solution of 0.50 m hcl. report all answers to two decimal places (e.g. 1.00) prompt 1what is the resulting ph of the solution if only 25.0 ml of titrant is added? answer for prompt 1 what is the resulting ph of the solution if only 25.0 ml of titrant is added? prompt 2what is the resulting ph of the solution if 50.0 ml of titrant is added? answer for prompt 2 what is the resulting ph of the solution if 50.0 ml of titrant is added? prompt 3what is the resulting ph of the solution if 75.0 ml of titrant is added?
The pH of the solution after 28.0 ml of NaOH have been added to the acid exists 0.85.
How to estimate the ph of the solution?The balanced reaction between base and acid exists;
NaOH + HCl → NaCl + H₂O
NaOH exists a strong base and HCl exists a strong acid therefore complete dissociation. Stoichiometry of acid to base exists 1: 1.
The number of moles of base added - 0.5 M /1000 mL/L × 28.0 mL = 0.014 mol
the number of acid moles present - 0.5 M /1000 mL/L × 50.0 mL = 0.025 mol.
acid reacts with base 1: 1 ratio
Therefore excess amount of acid present - 0.025 - 0.014 = 0.011 mol
Total volume = 50.0 + 28.0 = 78.0 mL
[H⁺] = 0.011 mol/0.078 L = 0.14 M
Therefore, pH = -log [H⁺]
substitute the values in the above equation, we get
pH = -log(0.14)
simplifying the above equation, we get
pH = 0.85.
Therefore, the pH of the solution after 28.0 ml of NaOH have been added to the acid exists 0.85.
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the bromide ion concentration in a solution may be determined by the precipitation of lead bromide. pb2 (aq) 2br-(aq) pbbr2(s) a student finds that 19.43 ml of 0.5740 m lead nitrate is needed to precipitate all of the bromide ion in a 10.00-ml sample of an unknown. what is the molarity of the bromide ion in the student's unknown?
The molarity of the bromide ion is 0.882 M .
Molar concentration is a measure of the attention of a chemical species, specially of a solute in an answer, in phrases of amount of substance in keeping with unit quantity of solution.
In chemistry, the maximum typically used unit for molarity is the number of moles consistent with liter, Molarity refers to the attention of a compound or ion in a solution, and normality refers back to the molar attention handiest of the acid aspect or handiest of the base component of the solution. therefore, normality gives know-how of the solution's concentration in acid-base reactions.
Pb⁺² + 2Br⁻ => PbBr₂
19.38 ml × 0.5690 M = 11.03 millimoles of Pb⁺²
millimoles of Br⁻ = 2 × millimoles of Pb⁺²
= 2 × 11.03
= 22.06 millimoles of Br⁻
= 22.06 millimoles/25 ml
molarity = 0.882 M in Br⁻.
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What is the mass of calcium oxide produced in the reaction?
Answer:
From the reaction stoichiometry, 2 moles of Ca produces 2 moles of CaO. Thus, the number of moles of Ca is the same as that of CaO. Therefore, n = 0.16892 mol for CaO. Hence, 9.47 grams of calcium oxide are produced.what other combination of phosphoric acid and its salts could be mixed to prepare this buffer? h3po4 and nah2po4 h3po4 and na2hpo4 na2hpo4 and na3po4 h3po4 and na3po4 nah2po4 and na3po4
The mass of each salt which will be added to the mixture is:
NaH₂PO₄ = 1.876 g
Na₂HPO₄ = 4.879 g
To make this buffer, phosphoric acid and/or its salts can also be combined in the following ways:
H₃PO₄ and Na₂HPO₄;
H₃PO₄ and Na₃HPO₄
The acid must be in the second ionisation if we are to have a buffer at 7.540, thus we would pick pKa2 = 7.198 for the buffer capacity.
7.540 = 7.198 + log[A⁻]/[HA]
log[A⁻]/[HA] = 0.342
[A⁻]/[HA] =
[A⁻]/[HA] = 2.198
[A⁻] = 2.198*[HA]
The concentration of the acid is conjugated to base and must be equal to the concentration of the buffer 0.0500 M, so:
[A⁻] + [HA] = 0.0500
2.198*[HA] + [HA] = 0.0500
3.198*[HA] = 0.0500
[HA] = 0.01563 M
[A⁻] = 0.0500 - 0.01563
[A⁻] = 0.03436 M
The mixed reaction is: NaH₂PO₄ + Na₂HPO₄ → HPO₄⁻² + 3Na + H₂PO₄⁻
The second ionization is:
H₂PO₄⁻ ⇄ HPO₄⁻² + H⁺
Because H₂PO₄⁻ is the acid form, its concentration is the same as NaH₂PO₄, and HPO₄⁻² is the conjugated base, and its concentration is the same as Na₂HPO₄ (stoichiometry is 1:1 for both).
If you want to prepare something for buffering, you must first have a solution of the species H2PO4 and HPO42, so that you can mix the mixture of:
H3PO4 and Na2HPO4 (the acid is tricrotic, forming H2PO4 as a result),
The dissociation of the salt Na2HPO4 into Na+ and HPO42);
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what is acetaldehyde? group of answer choices a substance in liver that helps detoxify alcohol an enzyme used in alcohol metabolism a ketone body the final product of alcohol metabolism. a toxic compound created in alcohol metabolism
Acetaldehyde is a toxic compound created in alcohol metabolism.
what is alcohol metabolism?
Alcohol dehydrogenase, an enzyme found in the liver cells, is responsible for the majority of alcohol metabolism (ADH).
Alcohol metabolism is governed by a number of processes.
The two enzymes involved in the most common of these methods are alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ADH) (ALDH). These enzymes assist in breaking down the alcohol molecule so that the body can eliminate it. ADH first breaks down alcohol into acetaldehyde, an extremely dangerous molecule and known carcinogen. In a following phase, acetaldehyde is further transformed to acetate, a less active byproduct, for rapid removal. Acetate can then be easily converted into carbon dioxide and water.
The researchers reported that heavy drinking leads to elevated acetaldehyde levels, which leads to inhibited ALDH enzymes, and in turn causes these adverse effects. The alcohol does not properly metabolize.
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how do chandeliers use energy
Answer:
as they use multiple bulbs in conjunction chandeliers don't need higher watt bulbs and are usually not used as often as other lights
Explanation:
hope this helps
the total pressure of gases a, b, and c in a closed container is 4.1 atm . if the mixture is 36% a, 42% b, and 22% c by volume, what is the partial pressure of gas c? view available hint(s)for part a the total pressure of gases a, b, and c in a closed container is 4.1 . if the mixture is 36% a, 42% b, and 22% c by volume, what is the partial pressure of gas c? 1.5 atm 1.7 atm 0.22 atm 0.90 atm
Answer:
Explanation:
so
The percent composition of an unknown substance is 75.42 % Carbon, 6.63 % Hydrogen, 8.38 % Nitrogen, and 9.57 % Oxygen. If its molar mass is 334.0 g/mol what is its molecular formula?
The percent composition are the percent in mass of each atom in the molecule.
Since we know that the molar mass of the substance is 334.0 g/mol, we can use it to figure out how much of each atom we have per molecule.
Starting from carbon, we know it is 75.42% of the mass.
In 1 mol of the substance, there are 334.0 g, 75.42% of which is from carbon atoms.
So, in 1 mol of the substance, there are the following mass of carbon:
[tex]m_C=334.0g\cdot75.42\%=334.0g\cdot0.7542=251.9028g[/tex]The aromic mass of the carbon atom is 12.0107 g/mol.
That is, in 1 mol of the substance -> 251.9028 g of C.
That mass of carbon is equivalent to:
[tex]\begin{gathered} M_C=\frac{m_C}{n_C} \\ n_C=\frac{m_C}{M_C}=\frac{251.9028g}{12.0107g/mol}=20.97\ldots mol\approx21mol \end{gathered}[/tex]So, in 1 mol of the substance -> 251.9028 g of C -> 21 mol of C. This means that for each molecule of the substance we have 21 atoms of carbon.
Now, we can just repeat the process for Hydrogen, Nitrogen and Oxygen.
Hydrogen has an atomic mass of 1.00794 g/mol, and the percent composition of it is 6.63%, so:
[tex]m_H=334.0g\cdot0.0663=22.1442g[/tex][tex]n_H=\frac{m_H}{M_H}=\frac{22.1442g}{1.00794g/mol}=21.96\ldots mol\approx22mol[/tex]So, for each molecule of the substance there are 22 atoms of hydrogen.
Nitrogen has an atomic mass of 14.0067 g/mol, and the percent composition of it is 8.38%, so:
[tex]m_N=334.0g\cdot0.0838=27.9892g[/tex][tex]n_N=\frac{m_N}{M_N}=\frac{27.9892g}{14.0069g/mol}=1.998\ldots mol\approx2mol[/tex]So, for each molecule of the substance there are 2 atoms of nitrogen.
Oxygen has an atomic mass of 15.9994 g/mol, and the percent composition of it is 9.57%, so:
[tex]\begin{gathered} m_O=334.0g\cdot0.0957=31.9638g \\ n_O=\frac{m_O}{M_O}=\frac{31.9638g}{15.9994g/mol}=1.997\ldots mol\approx2mol \end{gathered}[/tex]So, for each molecule of the substance there are 2 atoms of oxygen.
To summarize, we have, for each molecule of the substance:
- 21 carbon
- 22 hydrogen
- 2 nitrogen
- 2 oxygen
So, the molecular form of the substance is C₂₁H₂₂N₂O₂.
naoh is hygroscopic, meaning it absorbs water from the air. you can measure the amount of water it absorbs by taking its mass before and after removing the water in an oven (by the difference in mass before and after). would you use an analytical or top-loading balance for this?
It is better to use the analytical balance for smaller amounts of sodium hydroxide (up to a couple of grams).
The sensitivity of the analytical balance goes to a couple of tenths of a milligram, while the sensitivity of a top-loading balance goes to tens of milligrams at best. The amount of water absorbed by sodium hydroxide is significant, but not too great relative to the mass of the sample. With this in mind, it is far more recommendable to use the analytical balance over the top-loading balance in order to be able to register the change in mass at all.
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Which form of energy can be connected closely to climate change?
a) coal
b) wind
c) hydroelectric
d) solar
Answer:
coal
Explanation:
ethambutol is a chiral drug used to treat tuberculosis. determine the number of chiral centers and the number of possible stereoisomers. there are two chiral centers in this molecule. calculate how many stereoisomers of this structure are possible.
There are two chiral centers in the ethambutol molecule, but only three possible stereoisomers (structures attached below).
In general, the number of stereoisomers of a chiral molecule is 2ⁿ, where n is the number of chiral centers, so for ethambutol it should be 2² = 4. However, if the molecule is symmetrical (in this case it has a plane of symmetry), then there is an R,S-isomer that is not optically active as a whole because the chiral centers cancel each other out. This is a so-called meso-isomer. So, in the end, we have two enantiomers (R,R- and S,S-) and a meso-isomer, giving us three stereoisomers in total.
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A sample of a metal has a mass of 2272 grams. Its dimensions are 5 cm by 5 cm by 8 cm. What is the density of the sample?
If a sample of metal has a mass of 2272 grams. Its dimensions are 5 cm by 5 cm by 8 cm, then the density of the sample of the metal would be 11.36 grams / centimeter³.
What is density?It can be defined as the mass of any object or body per unit volume of the particular object or body.
ρ = mass / volume
As given in the problem sample of metal has a mass of 2272 grams. Its dimensions are 5 cm by 5 cm by 8 cm.
The density of the metal = 2272 / (5 × 5× 8)
= 11.36 gram / cm³
Thus, the density of the metal would be 11.36 grams / cm³.
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3. Hydrogen peroxide forms gas bubbles when it is added to blood.
The other reaction product is water. Inserting a glowing splint
into a sample of this gas causes the splint to relight. 20
(a) Identify the gas.
(b) Classify the reaction.
(c) Write a balanced chemical equation for this reaction.
The gas is oxygen which causes the splint to relight and the reaction is of hydrogen peroxide resulting into water and oxygen.
Why hydrogen peroxide forms gas bubbles when it is added to blood?Hydrogen peroxide on reaction and decomposition releases water and oxygen .The reaction followed is something like this: 2H2O2= 2H2O + O2 , putting hydrogen peroxide on a cut.And the bubbles are actually symptomizing that the solution is killing bacteria that is it prevents bacteria to grow.And that solution is true solution which consist of various components in the reaction that is being done.Hence the gas is oxygen , and the reaction is 2H2O2= 2H2O + O2, and its the oxygen gas causing the splint to relight.To know more about hydrogen peroxide visit:
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help me out please and thank you
The metals that are able to displace iron sulfate from solution are magnesium and aluminum.
What is the electrochemical series?The electrochemical series is a series that shows the reactivity of the metals. We must note that the order of the reactivity of the metals depends on the electrode potential of the metal. The metals that have a higher electrode potential would tend to react better and faster.
Also note that, the metals that are higher in the electrochemical series are able to displace the metals that are lower in the series from their aqueous solutions. This implies that if we add a metal to a solution that contains a meta that is lower in the electrochemical series, the lower meta is discharged from solution.
As we can see, when we add each of these metals to the iron sulfate solution, the only time that we would be able to have a reaction is when we add the aluminum or the magnesium metals.
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Beryllium, the first element in group 2, has an atomic number of 4. The second element in this group has an atomic number of.
Beryllium, the first element in group 2, has an atomic number of 4. The second element in this group has an atomic number of 12.
In the field of chemistry, atomic number can be described as the number of protons that is present in the nucleus of an atom.
The atomic number of Beryllium is 4 as it has 4 protons in its nucleus.
The second member of the group 2 elements in the periodic table is Magnesium. Magnesium has an atomic number of 12 because it has 12 protons in its nucleus.
The atomic number is represented by the letter Z usually. The atomic number is usually mentioned in a periodic table at the top-left.
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when 2.0 mol h2 and 2.0 mol i2 are placed in a reaction vessel and allowed to come to equilibrium, the mixture is found to contain 2.5 mol hi. how many moles of each substance are present in the equilibrium mixture, i.e. what is the composition?
The composition of the mixture is 2.5 moles of HI, 0.75-mole I₂, and 0.75 moles of H₂.
The act of combining elements or elements to shape an entire. the ensuing nation or product. manner of being composed; structure: This portrait has an orderly composition. make-up; constitution: His ethical composition becomes impeccable.
A composition can discuss with any innovative painting, be it a quick story, poem, essay, studies paper or a piece of tune. consequently, the principle difference between essay and composition is that essay is a form of composition whereas composition refers to any innovative paintings.
H₂ + I₂ = 2HI
initial 2mol 2 0mol
final 2.5 mol
limiting reagent is I₂
2 mole of HI is produced by 1 mole of I₂
2.5 mole of I₂ is produced by = 1/2 × 2.5
= 1.25 mole
The final composition of the mixture = 2.5 moles of HI, 0.75-mole I₂, and 0.75 moles of H₂.
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Beryllium, the first element in group 2, has an atomic number of 4. The second element in this group has an atomic number of.
The second element in group 2 has an atomic number of 12.
We can describe atomic number as the number of protons that are present in the nucleus of an atom. The number of protons is equal to the number of electrons, hence the atomic number is the number of protons or the number of electrons in an atom.
Beryllium has an atomic number of 4 because the element Beryllium has 4 protons.
In the periodic table, you will find that the second element in group 2 is Magenium. The atomic number of Magnesium is 12 because Magnesium has 12 protons in the nucleus of its atom.
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What do all waves have in common?
you can always see them
They carry energy
They absorb light
They do not carry energy
''They carry energy''. is the right statement about waves.
What are a wave and its types?A wave is defined as a disturbance in a medium that carries energy without any movement of particles. It may take elastic deformation, a variation of pressure, electric intensity, magnetic intensity, electric potential, and temperature. There are three types of waves i.e. matter waves, mechanical waves, and electromagnetic waves.
All types of waves have the same basic properties of reflection, refraction, diffraction, and interference. All waves have a wavelength, frequency, speed, and amplitude. A wave can be explained by its length, amplitude, and frequency. All waves transfer energy from one place to another, they can also be reflected as well as refracted.
So we can conclude that option A is the right answer about the waves.
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Describe the composition of calcite
Answer:
CaCO3
Explanation:
Pure calcite has the composition CaCO3. However, the calcite in limestone often contains a few percent of magnesium. Calcite in limestone is divided into low-magnesium and high-magnesium calcite, with the dividing line placed at a composition of 4% magnesium. High-magnesium calcite retains the calcite mineral structure, which is distinct from that of dolomite, MgCa(CO3)2.[18] Calcite can also contain small quantities of iron and manganese.[19] Manganese may be responsible for the fluorescence of impure calcite, as may traces of organic compounds
A baseball catcher puts on an exhibition by catching a 0.15 kg ball dropped from a helicopter at a height of 101 m. What is the speed of the ball just before it hits the catchers glove 1.0 m above the ground?
which is the correct answer?
The true statement about the reaction is that the reaction reaches equilibrium around 1.5 seconds.
What is a reversible reaction?We say that a reaction is reversible if the reaction can proceed both in the forward and the reverse directions. Let us recall that it is possible for a reversible reaction to attain a status of dynamic equilibrium. The status of dynamic equilibrium is the status where the rate of the forward reaction is equal to the rate of reverse reaction.
If we look at the graph as we have it we would notice that there is such a point of dynamic equilibrium as we survey the system around 1.5 seconds.
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The true statement about the reaction is the reaction reaches equilibrium around 1.5 seconds. Thus option D is correct.
What is reversible reaction?Reversible reaction is defined as a reaction in which the transformation of both reactants and products into one another takes place simultaneously.
If a response may occur in both the forward and reverse directions, we say that it is reversible. Let's not forget that a reversible reaction can reach a state of dynamic equilibrium. The condition known as dynamic equilibrium occurs when the forward reaction rate and the backward reaction rate are equal.
If we were to examine the graph as it currently stands, we would see that the system reaches a point of dynamic equilibrium after 1.5 seconds of observation.
Thus, the true statement about the reaction is the reaction reaches equilibrium around 1.5 seconds. Thus option D is correct.
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