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 $y$ is

Answer 1

$Sn+2HCl\to SnC{l}_2+H_2$
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)
$\frac{1.29}{129}=\frac{x}{357}$
$x=3.57$
$\therefore y=\frac{123\times 3.57}{357}=1.23\text{g}$