For the reaction :

CHEMISTRY · Single correct · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

For the reaction : AB2(g)⇌AB(g)+B(g)\text{AB}_2(g) \rightleftharpoons \text{AB}(g) + \text{B}(g) , the degree of dissociation of AB2\text{AB}_2 is negligible compared to unity, then which one is not correct ? (1) Keq.=Cα24K_{eq.} = \frac{C\alpha^2}{4} (2) α=Keq.C\alpha = \sqrt{\frac{K_{eq.}}{C}} (3) α=KpP\alpha = \sqrt{\frac{K_p}{P}} (4) Keq.=α2×P(1+α)K_{eq.} = \frac{\alpha^2 \times P}{(1 + \alpha)}

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