How many grams of `H_(2)SO_(4)` are present in `500ml` of `0.2M H_(2)SO_(4)` solution ? .

Options

A. `56`
B. `5.6`
C. `11.2`
D. none of these

Answer

C

Explanation

`{:(,H_(2)SO_(4)" "+,2NaOHrarrNa_(2)SO_(4)+H_(2)O),(,,400xx0.4):}`
`80m "mol" = 160 m "mol"`
Remaining `H_(2)SO_(4) = 200xx0.5 - 80 m mol`
`= 100 - 80 = 20 m mol`
`{:(,2NH_(3)" "+,H_(2)SO_(4)rarr(NH)_(4)SO_(4)),(,40 m "mol" ,20 m "mol"):}`
`%N = (40xx10^(-3)xx14)/(5) xx 100 = 11.2`