QJEEM05Ch577b: JEE Main 2005 Chemistry - Class 12 JEEM05Ch577b Solution: If α is the degree of dissociation of Na 2 SO 4 , the vant…

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If

α

is the degree of dissociation of Na₂SO₄, the vant Hoff’s factor (i) used for calculating the molecular mass is :

Accepted Answer

N a_{2} S O_{4} ⇌ \underset{2 α}{2 N a^{+}} + \underset{α}{S O_{4}^{- -}}

Vant. Hoff's factor

i = \frac{1 - α + 2 α + α}{1} = 1 + 2 α

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