STANDARDChemistry-Solutions
STANDARD Chemistry Colligative Properties MCQ Question
Type: MCQ-conceptual-Medium-Class 12
If α is the degree of dissociation of Na₂SO₄, the van't Hoff's factor (i) used for calculating the molecular mass is
A
1 + α
B
1 − α
C
1 + 2α
D
1 − 2α
Correct Answer
Option C
Detailed Explanation
Na₂SO₄ dissociates into 2Na⁺ and SO₄²⁻. The van't Hoff factor (i) is calculated as 1 + 2α, considering the dissociation into three ions.
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