Half life period of a _______ order reaction is _______ of the concentration of the reactant.

Explanation

To solve the question regarding the half-life period of a specific order reaction, we will analyze the half-life of first-order reactions and its dependence on the concentration of the reactant.

### Step-by-Step Solution:

1. **Understanding Half-Life**: The half-life (t₁/₂) of a reaction is the time required for the concentration of a reactant to decrease to half of its initial concentration.

2. **First-Order Reaction Definition**: In a first-order reaction, the rate of reaction is directly proportional to the concentration of one reactant. The general rate equation can be expressed as:
\[
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