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For the reaction, A+B hArr C +D, the i...

For the reaction, `A+B hArr C +D,` the initial concentration of A and B are equal, but the equilibrium concentration of Cis twice that of equilibrium concentration of A. The equilibrium constant is:

A

4

B

9

C

`1//4`

D

`1//9`

Text Solution

Verified by Experts

The correct Answer is:
A
`{:(A, +, B, hArr, C + , D), (a,, a, 0,, 0), ((a-x),, (a-x), x,,x ):}`
Given `x =2 ( a - x) or x = (2a)/(3) , K_(c )= (x ^(2))/( (a - x ) ^(2)) = ((2 a // 3) ^(2))/( (a - 2a // 3) ^(2)) = 3`
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