Can You Pass This Chemical Kinetics Test? Trivia Quiz

15 Questions | By Jagranjosh | Last updated: Mar 21, 2022 | Total Attempts: 2396

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Can You Pass This Chemical Kinetics Test? Trivia Quiz - Quiz

Chemical kinetics is a study of measuring the rates of chemical reactions. This involves calculations, which may require your mathematics knowledge. It is a good teaser to those of us who think we are super good in Chemistry and Math.

Questions and Answers

1.

In a reaction, A + B Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled, rate law for the reaction can be written as:
- A.
  
  Rate = k [A] [B]
- B.
  
  Rate = k [A]² [B]
- C.
  
  Rate = k [A] [B]²
- D.
  
  Rate = k [A]² [B]²
2.

Which of the following statement for order of reaction is not correct?
- A.
  
  Order can be determined experimentally
- B.
  
  Order of a reaction is equal to the sum of the power of concentration terms in differential rate law
- C.
  
  It is not affected with the stoichiometric coefficients of the reactants
- D.
  
  Order can be fractional
3.

A reaction involving two different reactants can never be:
- A.
  
  Unimolecular Reaction
- B.
  
  First order reaction
- C.
  
  Second order reaction
- D.
  
  Bimolecular reaction
4.

The conversion of molecules X and Y follows second order kinetics. If concentration of X is increased to three times, how will it affect the rate of formation of Y?
- A.
  
  Decrease the rate of time for the conversion of X to Y.
- B.
  
  Increase the rate of time for the conversion of X to Y.
- C.
  
  No change in rate of time for the conversion of X to Y.
- D.
  
  No dependency on time.
5.

The rate of reaction between two reactants A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of reaction with respect to reactant B is:
- A.
  
  -1
- B.
  
  1
- C.
  
  -2
- D.
  
  2
6.

If a reaction is 50% complete in 2 hours and 75% complete in 4 hours. What is the order of the reaction:
- A.
  
  First order reaction
- B.
  
  Third order reaction
- C.
  
  Zero order reaction
- D.
  
  Second order reaction
7.

Consider a reaction, aG + bH Products. When concentration of both the reactants G and H is doubled, the rate increases by eight times. However, when the concentration of G is doubled keeping the concentration of H fixed, the rate is doubled. The overall order of the reaction is:
- A.
  
  0
- B.
  
  1
- C.
  
  2
- D.
  
  3
8.

A reaction was found to be second order with respect to concentration of carbon monoxide. If the concentration of carbon monoxide is doubled, with everything else kept the same, the rate of reaction will:
- A.
  
  Become three times
- B.
  
  Increase by factor of 4
- C.
  
  Become two times
- D.
  
  Remains Unchanged
9.

The rate of a chemical reaction doubles for every 10°C rise of temperature. If the temperature is raised by 50°C, the rate of the reaction increases by about:
- A.
  
  10 times
- B.
  
  24 times
- C.
  
  32 times
- D.
  
  64 times
10.

For the reaction: 2A + B 3C + D Which of the following does not express the reaction rate?
- A.
- B.
- C.
- D.
11.

Predict the order of reaction, looking onto the figure:
- A.
  
  Zero
- B.
  
  One
- C.
  
  Two
- D.
  
  Three
12.

A follows first order reaction, (A) product Concentration of A, changes from 0.1 M to 0.025 M in 40 minutes. Find the rate of reaction of A when concentration of A is 0.01 M.
- A.
  
  1.73 x 10^-4 M min^-1
- B.
  
  1.73 x 10^-5 M min^-1
- C.
  
  3.47 x 10^-5 M min^-1
- D.
  
  3.47 x 10^-4 M min^-1
13.

When a bio chemical reaction is carried out in laboratory; outside the human body in the absence of enzyme, then the rate of reaction obtained is 10^–6 times, than activation energy of reaction in the presence of enzyme is:
- A.
  
  6/RT
- B.
  
  P is required
- C.
  
  Different from E_a obtained in laboratory
- D.
  
  Can’t say anything
14.

In the reaction: BrO₃^– (aq) + 5Br^– (aq) + 6H⁺ 3Br₂ (l) + 3H₂O(l) The rate of appearance of bromine (Br₂) is related to the rate of disappearance of bromide ions as
- A.
- B.
- C.
- D.
15.

For the reaction N₂O₅(g) 2NO₂(g) + 1/2O₂(g) the value of rate of disappearance of N₂O₅ is given as 6.25 × 10^–3 mol L^–1 s^–1. The rate of formation of NO₂ and O₂ is given respectively as:
- A.
  
  1.25 x 10^-2 mol L^-1 s^-1 and 3.125 x 10^-3 mol L^-1 s^-1
- B.
  
  1.25 x 10^-3 mol L^-1 s^-1 and 3.125 x 10^-3 mol L^-1 s^-1
- C.
  
  6.25 x 10^-2 mol L^-1 s^-1 and 3.125 x 10^-3 mol L^-1 s^-1
- D.
  
  6.25 x 10^-3 mol L^-1 s^-1 and 3.125 x 10^-3 mol L^-1 s^-1