A reaction is of first order in reactant A and of second order in reactant B. How is the rate of this reaction affected when (i) the concentration of B alone is increased to three times (ii) the concentrations of A as well as B are doubled?

Explanation

To solve the problem step by step, we will first define the rate equation based on the orders of the reactants, and then analyze how the rate changes under the given conditions.

### Step 1: Write the Rate Equation
The rate of a reaction can be expressed using the rate law, which is dependent on the concentration of the reactants and their respective orders.

Given:
- The reaction is first order in reactant A.
- The reaction is second order in reactant B.
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