Question
Chemistry Question on Chemical Kinetics
A reaction is first order in terms of A and second order in terms of B. What will be the rate of reaction, If the concentration of B is increased two times?
A
4-Times
B
2-Times
C
8-Times
D
16-Times
Answer
4-Times
Explanation
Solution
The correct answer is option (A): 4-Times
According to the question, the reaction is rate= k[A][B]² The concentration of B is doubled, so according to the rate law expression. Initial is B and later it is 2B. rate= k[A][2B]² As the concentration of B is increased by 2 times, the rate of the reaction will increase by four times.