Question

Reaction of $xg$ of $Sn$ with $HCl$ quantitatively produced a salt. Entire amount of the salt reacted with $yg$ of nitrobenzene in the presence of required amount of $HCl$ to produce $1.29g$ of an organic salt (quantitatively).
(Use Molar masses (in $gmo{l}^{-1}$ ) of $H,C,N,O,Cl$ and $Sn$ as $1,12,14,16,35$ and $119$ , respectively).
The value of $x$ is _______.

Answer 1

Answer: 3.57

$Sn+2HCl\to SnC{l}_2+H_2$

Moles of $Sn=\frac{x}{119}$
Moles of nitrobenzene $=\frac{x}{119}\times \frac{1}{3}$
Moles of anilium chloride $=\frac{x}{119}\times \frac{1}{3}$
Moles of nitrobenzene $=\frac{x}{357}$
$\frac{y}{123}=\frac{x}{357}$ ... (1)
Moles of anilium chloride $=\frac{x}{357}$ ... (2)
$\frac{1.29}{129}=\frac{x}{357}$
$x=3.57$