The vapour density of the equilibrium mixture of the reaction: `SO _(2) Cl _(2) (g) hArr SO _(2) (g) + Cl _(2) (g) is 50.` The percent dissociation of `SO_(2) Cl_(2)` is

Options

A. `33.00`
B. `35.0`
C. `30.0`
D. `66.00`

Answer

B

Explanation

`alpha = (D-d)/((n-1)d)`
Given , d = 50
`D = (135)/(2) = 67.5 because (D = (M w)/(2)) therefore alpha = (67.5 - 50)/(50(2-1)) = 0.35` % dissociation 35.0%