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Chemistry Question on Solutions

An aqueous solution of a salt MX2MX_2 at certain temperature has a van?t Hoff factor of 2. The degree of dissociation for this solution of the salt is :

A

0.33

B

0.5

C

0.67

D

0.8

Answer

0.5

Explanation

Solution

α=i−1k−1\alpha = \frac{i - 1}{k-1}
=2−13−1=12=50%= \frac{2-1}{3-1}=\frac{1}{2} = 50\%