A reaction is first order in A and second order in B
(i) Write the differential rate equation.
(ii) How is the rate affected on increasing the concentation of B three times ?
(iii) How is the rate affected when the concentration of both A and B are doubled ?

Explanation

Let's solve the question step by step.

### Step 1: Write the Differential Rate Equation

Given that the reaction is first order in A and second order in B, we can express the rate of the reaction (r) using the rate law expression.

The general form of the rate law is:
\[ r = k [A]^n [B]^m \]
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