STANDARD Chemistry Colligative Properties MCQ Question
What weight of glycerol should be added to 600 g of water in order to lower its freezing point by 10°C? (Kf = 1.86°C m⁻¹)
496 g
297 g
310 g
426 g
Correct Answer
Detailed Explanation
Using the formula ΔTf = Kf × m = (Kf × W₂ × 1000) / (M₁ × W₁), we find W₂ = (10 × 92 × 600) / (1.86 × 1000) = 296.77 g, which is approximately 297 g.
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