Answer:
Ostwald’s dilution law describes the dissociation constant of the weak electrolyte with the degree of dissociation (α) and the concentration of the weak electrolyte.
A binary electrolyte AB which dissociates into A+and B– ions.
AB ⇌ A+ + B–
(i) For very weak electrolytes, since α <<< 1, (1 – α) = 1
∴ \(K = C\alpha ^{2}\) \(\alpha = \sqrt\frac{K}{C}\)
(ii) Concentration of any ion = √K/V
K =dissociation constant of a weak acid
α = degree of dissociation.
Ostwald’s dilution law states that only at infinite dilution the weak electrolyte undergoes complete ionization.
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