`7.36g` of a mixture of `KCI` and KI was dissolved in `H_(2)O` to prepare 1 litre solution 25 ml of this required `8.45 ml` of `0.2N AgNO_(3)`, what is % of KI in mixture ?

Options

A. 57.28
B. 47.28
C. 5.72
D. 149.12

Answer

A

Explanation

`KI+KCl," geq of mixture = geq of "AgNO_(3)xg (7.36-x)g`
`((x)/(166)+(7.36-x)/(74.5))=(8.45xx0.2xx40)/(1000)`
`therefore " on solving x"=4.216g`
`therefore " % of KI "52.28%`