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Question

Chemistry Question on Ionic Equilibrium In Solution

The Ostwald dilution law is expressed as:

A

Ka=cα2(1−α){{K}_{a}}=\frac{c{{\alpha }^{2}}}{(1-\alpha )}

B

Ka=cα(1−α){{K}_{a}}=\frac{c\alpha }{(1-\alpha )}

C

Ka=1−αcα2{{K}_{a}}=\frac{1-\alpha }{c{{\alpha }^{2}}}

D

Ka=c(1−α)α2{{K}_{a}}=\frac{c(1-\alpha )}{{{\alpha }^{2}}}

Answer

Ka=cα2(1−α){{K}_{a}}=\frac{c{{\alpha }^{2}}}{(1-\alpha )}

Explanation

Solution

Ostwald dilution law is : Ka=C.α2(1−α)K_{a}=\frac{C . \alpha^{2}}{(1-\alpha)} where : Ka=K_{a}= Dissociation constant α=\alpha= degree of dissociation C=C= concentration