When does the average rate become equal to instantaneous rate ?

Explanation

To determine when the average rate becomes equal to the instantaneous rate, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Average Rate**:
The average rate of a reaction is defined as the change in concentration of a reactant or product over a specific time interval. Mathematically, it can be expressed as:
\[
\text{Average Rate} (R) = \frac{\Delta C}{\Delta t}
...