Question

$0.25g$ of an organic compound containing chlorine gave $0.40g$ of silver chloride in Carius estimation. The percentage of chlorine present in the compound is ____[in nearest integer]
(Given: Molar mass of $Ag$ is $108gmo{l}^{-1}$ and that of $Cl$ is $35.5gmo{l}^{-1}$ )

Answer 1

Answer: 40

wt. of organic compound $=0.25g$
mass of $Cl=\frac{35.5}{143.5}\times 0.4g$
mass $\%$ of $Cl$ in the organic compound
$=\frac{35.5\times 0.4}{143.5\times 0.25}\times 100$
$=39.58\%$