The solution of sulphuric acid contains 80% by weight `H_(2)SO_(4)`. Specific gravity of this solution is 1.71. Its normality is about

Options

A. 18
B. 27.9
C. 1
D. 10

Answer

B

Explanation

`N = (10 xx "sp. gr. of the solution" xx "wt.% of solute" xx "Mol. wt.")/("Molecular wt. of solute" xx "Eq. wt.")`
`N = (10 xx 1.71 xx 80 xx 98)/(98 xx 49) = 27.9`