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At 500 K, equilibrium constant, K(c ), f...

At 500 K, equilibrium constant, `K_(c )`, for the following reaction is 5.
`(1)/(2)H_(2)(g)+(1)/(2)I_(2)(g)hArr HI(g)`
What would be the equilibrium constant `K_(c )` for the reaction
`2HI(g)hArr H_(2)(g)+I_(2)(g)`

A

`0.04`

B

`0.4`

C

25

D

`2.5`

Text Solution

Verified by Experts

The correct Answer is:
A
`(1)/(2)H_(2)(g)+(1)/(2)I_(1)(g)hArr HI(g)K_(a)=5`
`HI(g)hArr (1)/(2)H_(2)(g)+(1)/(2)I_(2)(g)K_(a)=(1)/(5)`
`2HI(g)hArr H_(2)(g)+I_(2)(g)K_(a)=((1)/(5))^(2)=0.04`
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