In some cases, it is found that a large number of colliding molecules have energy more than thereshold value, yet the reaction is slow. Why?

Explanation

To address the question, we need to understand the factors that influence the rate of a chemical reaction, specifically in the context of collision theory.

### Step-by-Step Solution:

1. **Understanding Collision Theory**:
- According to collision theory, for a reaction to occur, molecules must collide with sufficient energy and proper orientation.
- The energy required for a reaction to occur is known as the activation energy.

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