Number of gram equivalents of solute in 100 ml of 5N HCl solution is

Options

A. 50
B. 500
C. 5
D. 0.5

Explanation

To find the number of gram equivalents of solute in 100 ml of a 5N HCl solution, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Normality (N)**:
Normality (N) is defined as the number of gram equivalents of solute per liter of solution. In this case, we have a 5N HCl solution.

2. **Convert Volume from ml to L**:
Since normality is expressed per liter, we need to convert the volume from milliliters to liters.
\[ 100 \, \text{ml} = \frac{100}{1000} \, \text{L} = 0.1 \, \text{L} \]

3. **Use the Normality Formula**:
The formula for normality is:
\[ \text{Normality (N)} = \frac{\text{Number of gram equivalents}}{\text{Volume of solution in liters}} \]
Rearranging this formula to find the number of gram equivalents gives us:
\[ \text{Number of gram equivalents} = \text{Normality (N)} \times \text{Volume of solution in liters} \]

4. **Substitute the Values**:
Now we can substitute the values we have:
\[ \text{Number of gram equivalents} = 5 \, \text{N} \times 0.1 \, \text{L} \]

5. **Calculate the Result**:
\[ \text{Number of gram equivalents} = 5 \times 0.1 = 0.5 \, \text{gram equivalents} \]

### Final Answer:
The number of gram equivalents of solute in 100 ml of 5N HCl solution is **0.5 gram equivalents**.

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