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Q. Molarity of $0.2 \, NH_2SO_4$ is

KCETKCET 2005Some Basic Concepts of Chemistry

Solution:

Molarity $=\frac{\text { Normality }}{n-\text { factor }}$
For $H _{2} SO _{4}, n$-factor is 2
Molarity $=\frac{\text { Normality }}{2}$
Molarity $=\frac{0.2}{2}$
Molarity $=0.1 M$