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AIPMT 2011 Physics and Chemistry Solved Paper

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Question : 16

Total: 100

The freezing point depression constant for water is −1.86∘Cm−1. If 5.00gNa2SO4 is dissolved in 45.0g H2O, the freezing point is changed by −3.82∘C. Calculate the van't Hoff factor for Na2SO4.

2.05
2.63
3.11
0.381

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