Question

$4g$ caustic soda is dissolved in $100cc$ of solution. The normality of solution is:

• A. 0
• B. 0.5
• C. 1
• D. 1.5

Answer 1

Answer: (C)

Normality is defined as number of equivalents of a substance present in $1L$ of solution
$N=\frac{\text{gram equivalents of solute}}{\text{volume}(L)}$
$=\frac{\text{mass of solute}(g)}{\text{equivalent mass of solute }\times \text{vol}.(L)}$
$N=\frac{4}{40}\times \frac{1}{0.1}=1N$