Dear Student, O2 + 2SO2 ↔ 2SO3Initial 1 2 0Equil 1-x 2-2x 2x so, [O2]=1-xV[SO2]=2-2xV[SO3] =2xVSo, K=[SO3]2[O2][SO2]2 =(2xV)2(1-xV)(2-2xV)2 =4x2×V(1-x)4(1-x)2 =x2V(1-x)3Hence, correct answer is (A)

Qn no 10

Dear Student,

O_{2} + 2 {SO}_{2} \leftrightarrow 2 {SO}_{3} Initial 1 2 0 Equil . 1 - x 2 - 2 x 2 x so, [O_{2}] = \frac{1 - x}{V} [{SO}_{2}] = \frac{2 - 2 x}{V} [{SO}_{3}] = \frac{2 x}{V} So, K = \frac{[{SO}_{3}]^{2}}{[O_{2}] [{SO}_{2}]^{2}} = \frac{(\frac{2 x}{V})^{2}}{(\frac{1 - x}{V}) (\frac{2 - 2 x}{V})^{2}} = \frac{4 x^{2} \times V}{(1 - x) 4 (1 - x)^{2}} = \frac{x^{2} V}{(1 - x)^{3}} Hence, correct answer is (A)

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