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Q. A sample of $Na_2CO_3\cdot H_2O$ weighing $3.1 \,g$ is added to $100 \,mL$ of $0.5 \,NH_2SO_4$, the resulting solution will be

Some Basic Concepts of Chemistry

Solution:

Normality of $Na_2CO_3\cdot H_2O$ solution
$ = \frac{3.1}{62} \times \frac{1000}{100} = 0.5\,N$
Solution will be neutral since both $H_2SO_4$ and $Na_2CO_3 \cdot H_2O$ are of same normality.