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 = (Mw)/(2)). therefore alpha = (67.5- 50)/(50 (2-1)) = 0 . 35%` dissociation ` = 35 0%`