Question

Volume of dry $N_{2}O$ produced at this point measured at STP in litre (nearest integer) is__________.

Answer 1

$t=\frac{2.303}{K}log\frac{a}{(a-X)}$

If $t=t_{1/2},X=\frac{a}{2}$;

$\therefore t_{1/2}=\frac{2.303}{K}log\frac{a}{a-\left(a/2\right)}$ .....(i)

If $t=t_{99}$%, $X=\frac{99a}{100}$;

$t_{99}$% $=\frac{2.303}{K}log\frac{a}{a-\left(99a/100\right)}$ ....(ii)

Also, Mole of $N_{2}O$ formed $=\left(\frac{99}{100}\right)\times$ mole of $N{H}_{2}N{O}_2$ taken

$=\frac{99}{100}\times \frac{6.2}{6.2}=0.099$

$\therefore$ Volume of $N_{2}O$ formed at STP $=0.099\times 22.4=2.217L$