314539
Vapor density of \(\mathrm{PCl}_{5}\) at \(200^{\circ} \mathrm{C}\) is 70. The degree of dissociation of \(\mathrm{PCl}_{5}\) at this temperature is
1 \(48.9 \%\)
2 \(57.9 \%\)
3 \(38.8 \%\)
4 \(46.1 \%\)
Explanation:
Molecular weight of \(\mathrm {P C l_{5}=208.5}\) Vapor density \(\mathrm {(D)=104.25}\) \(\rm {\alpha=\dfrac{D-d}{d(n-1)}=\dfrac{104.25-70}{70(2-1)}=48.9 \%}\)