The slope of the tangent at a point on the curve of concentration of a reactant as a function of time gives the instantaneous rate of reaction.

Options

A. acceleration
B. velocity
C. impusle
D. momentum

Explanation

To solve the question regarding the relationship between the slope of the tangent at a point on the curve of concentration of a reactant as a function of time and the instantaneous rate of reaction, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Graph**:
- We are dealing with a graph where the x-axis represents time (t) and the y-axis represents the concentration of a reactant (A).

2. **Identify the Tangent**:
- At any given point on the curve, we can draw a tangent line. This tangent line represents the instantaneous behavior of the concentration at that specific moment in time.

3. **Calculate the Slope**:
- The slope of the tangent line at that point can be mathematically represented as \(\frac{dA}{dt}\), where \(dA\) is the change in concentration and \(dt\) is the change in time.

4. **Relate Slope to Rate of Reaction**:
- The instantaneous rate of reaction is defined as the rate at which the concentration of the reactant changes at that specific moment. This is proportional to the slope of the tangent line. Thus, we can say that:
\[ \text{Instantaneous Rate of Reaction} \propto \frac{dA}{dt} \]

5. **Conclusion**:
- Since the slope of the tangent line gives us the instantaneous rate of change of concentration with respect to time, we conclude that the statement is true.

### Final Statement:
The slope of the tangent at a point on the curve of concentration of a reactant as a function of time indeed gives the instantaneous rate of reaction. Therefore, the statement is **True**.

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