The reaction `2SO_(2)(g)+O_(2)(g)hArr2SO_(3)(g)` is carried out in a 1 `dm^(3)` vessel and 2 `dm^(3)` vessel separately. The ratio of the reaction velocities will be

Options

A. `1:8`
B. `1:4`
C. `4:1`
D. `8:1`

Answer

A

Explanation

Rate of reaction (initial) `=K[SO_(2)]^(2)[O_(2)]`
If volume becomes double, concentration of all reactant and product reduced to half of initial concentration.
`therefore` Rate of reaction (final) `=K[(SO_(2))/(2)].[(O^(2))/(2)]^(2)=(1)/(8)xx` Initial rate
`therefore` `("Rate of reaction (Initial)")/("Rate of reaction (Final)")=(1)/(8)`