1 mole of A and 1 mol3 of B are taken in a 5 litre flask, 0.5 mole of c is formed in the equilibrium of
`A+BhArrC+D`
What is molar concentration of each species if the reaction is carried with 2 mole A, 1 mole of B in a 5 litre flask at the same temperature.

Explanation

`underset(1-x)underset(1)(A)+underset(1-x)underset(1)(B)hArr underset(x)underset(0)(C) underset(x)underset(0)(D)` Initial concentrations equilibrium concentrations.
`K_(c)=([C][D])/([A][B])=1`
`underset (2-1)underset(2)(A)+underset(1-x)underset(1)(B)hArrunderset(x)underset(0)(C)+underset(x)underset(0)(D)` initial concentrations equilibrium concentrations
`1=(x^(2))/((2-x)(1-x))`
`x=0.665`
`[C]=[D]=0.665/2=0.133 :"mol" L^(-1)`
`[A]=2-0.665/2=0.267 "mol"L^(-1)`
`[B]=1-0.665/2=00.67 "mol" L^(-1)`