STANDARD Chemistry Colligative Properties MCQ Question
If α is the degree of dissociation of Na₂SO₄, the van't Hoff's factor (i) used for calculating the molecular mass is
1 + α
1 − α
1 + 2α
1 − 2α
Correct Answer
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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