For the reaction `2A(g)+B(g)hArr C(g)+D(g), K_c=10^(12)`.if initially 4,2,6,2 moles of A,B,C,D respectively are taken in a 1 litre vessel, then the equilibrium concentration of A is :
A
`4xx10^(-4)`
B
`2xx10^(-4)`
C
`10^(-4)`
D
`8xx10^(-4)`
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The correct Answer is:
A
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