For a first order reaction. the time required for completion of 90% reaction is 'x' times the half life of the reaction. The value of 'x' is
(Given: In 10 = 2.303 and log 2 = 0.3010)

Options

A. 1.12
B. 2.43
C. 3.32
D. 33.31

Explanation

To solve the problem, we need to find the value of 'x' such that the time required for the completion of 90% of a first-order reaction is 'x' times the half-life of the reaction.

### Step-by-step Solution:

1. **Understand the First-Order Reaction**:
For a first-order reaction, the rate constant \( k \) relates to the concentration of reactants and the time taken for the reaction to proceed.

2. **Calculate Time for 90% Completion**:
...