Question

The Ostwald dilution law is expressed as:

• A. $ {{K}_{a}}=\frac{c{{\alpha }^{2}}}{(1-\alpha )} $
• B. $ {{K}_{a}}=\frac{c\alpha }{(1-\alpha )} $
• C. $ {{K}_{a}}=\frac{1-\alpha }{c{{\alpha }^{2}}} $
• D. $ {{K}_{a}}=\frac{c(1-\alpha )}{{{\alpha }^{2}}} $

Answer 1

Answer: (A)

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