First slide

Theory of dilute solutions

Question

The degree of dissociation $α$ of a weak electrolyte is

Moderate

A

$\frac{i - 1}{n + 1}$
B

$\frac{i - 1}{n - 1}$
C

$\frac{n - 1}{i - 1}$
D

$\frac{n + 1}{i - 1}$

Solution

$n A ⇌ A_{n} A_{n} ⇌ n A 1 1 1 - α α / n 1 - α n α i = 1 - α + α / n i = 1 - α + n α \Rightarrow α = \frac{i - 1}{n - 1}$

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