For the reaction `2SO_2(g) + O_2 (g) iff 2SO_3 (g)` at 300K, the value of `DeltaG^@` is - 690.9R. The equilibrium constant value for the reaction at that temperature is (R is gas constant)

Options

A. `10atm^(-1)`
B. 10atm
C. 10
D. 1

Explanation

`2SO_2(g)+O_2(g) `/_\G=-RTlnk" or "=690.9R=-RTlnk`
or `(690.7)/(300)=InK " or "2.303=Ink" or "K=10`
`K_p=(p^2sO_3)/(p^2so_2xxpo_2)xx(atm^2)/(atm^3)=atm^(-1)`