Rate Of Reaction Problems-Multiple Choice Questions Quiz

Interactive MCQs on “Rate Of Reaction Problems”:

Solve the following 10 questions: Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: For a reaction A → B, if the concentration of A changes from 0.2 M to 0.05 M in 20 seconds, what is the average rate of reaction?

(a) 0.175 M/s
(b) 0.005 M/s
(c) 0.125 M/s
(d) 0.075 M/s

Question 2: For a reaction 2A + B → C, if the concentration of B changes from 0.4 M to 0.2 M in 30 seconds, what is the average rate of reaction?

(a) 0.0067 M/s
(b) 0.02 M/s
(c) 0.0133 M/s
(d) 0.0083 M/s

Question 3: If the initial concentration of a reactant is 0.1 M and it reduces to 0.02 M in 40 seconds, what is the rate constant of the reaction?

(a) 0.15 s^-1
(b) 0.025 s^-1
(c) 0.005 s^-1
(d) 0.1 s^-1

Question 4: If a reaction follows first-order kinetics and its rate constant is 0.02 s^-1, what is the half-life of the reaction?

(a) 0.01 s
(b) 0.1 s
(c) 0.3466 s
(d) 34.66 s

Question 5: If the rate of a reaction is 0.05 M/s and the concentration of the reactant is 0.2 M, what is the rate constant?

(a) 0.25 s^-1
(b) 0.4 s^-1
(c) 0.025 s^-1
(d) 0.01 s^-1

Question 6: If the rate constant of a reaction is 0.03 s^-1 and the initial concentration of the reactant is 0.5 M, what will be the concentration after 120 seconds?

(a) 0.075 M
(b) 0.25 M
(c) 0.125 M
(d) 0.15 M

Question 7: If a reaction is second-order and its rate constant is 0.02 M^-1 s^-1, what is the rate of the reaction when the concentration of the reactant is 0.1 M?

(a) 0.002 M/s
(b) 0.004 M/s
(c) 0.02 M/s
(d) 0.2 M/s

Question 8: For a reaction A → B, if the concentration of A changes from 0.2 M to 0.05 M in 10 seconds, what is the rate of reaction at t = 5 seconds?

(a) 0.15 M/s
(b) 0.075 M/s
(c) 0.025 M/s
(d) 0.05 M/s

Question 9: If the initial concentration of a reactant is 0.2 M and it reduces to 0.08 M in 60 seconds, what is the rate constant of the reaction?

(a) 0.05 s^-1
(b) 0.01 s^-1
(c) 0.0333 s^-1
(d) 0.15 s^-1

Question 10: If the rate constant of a reaction is 0.04 s^-1 and the initial concentration of the reactant is 0.3 M, what will be the concentration after 150 seconds?

(a) 0.09 M
(b) 0.18 M
(c) 0.225 M
(d) 0.45 M