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# A reaction is first order in A and second order in B. How is the rate affected when the concentrations of both A and B are doubled? - CBSE (Science) Class 12 - Chemistry

ConceptIntegrated Rate Equations First Order Reactions

#### Question

A reaction is first order in A and second order in B. How is the rate affected when the concentrations of both A and B are doubled?

#### Solution

When the concentrations of both A and B are doubled,

-(d[R])/dt = k [A][B]^2

= k[2A][2B]^2

=8.k[A][B]^2

Therefore, the rate of reaction will increase 8 times.

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#### APPEARS IN

NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 4: Chemical Kinetics
Q: 9.3 | Page no. 118
Solution A reaction is first order in A and second order in B. How is the rate affected when the concentrations of both A and B are doubled? Concept: Integrated Rate Equations - First Order Reactions.
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