Experiment 14 Prelaboratory Assignment Molar Mass of a Solid sore about understa

Question

Experiment 14 Prelaboratory Assignment Molar Mass of a Solid sore about understanding the colligative propenties of a solution rather than the determination of Dole -Lob Sec 1. This experiment is None Desk No. the molar mass of a solid. a. Define colligative properties. b. Which of the following solutes has the greatest effect on the colligative properties for a given mass of pure water? Explain. (i) 0.01 mol of CaCI (ii) 0.01 mol of KNO (iii) 0.01 mol of CO(NH (an electrolyte) (an electrolyte) (a nonelectrolyte) 2. Explain why ice cubes formed from water of a glacier freeze at a higher temperature than ice cubes formed from water of an under- ground aquifer. 3. Two solutions are prepared using the same solute Solution A: 0.14 g of the solute dissolves in 15.4 g of r-butanol Solution B: 0.17 g of the solute dissolves in 12.7 g of cyclohexane Which solution has the greatest freezing point change? Show calculations and explain.

Explanation / Answer

2. Aquifier water contains additional minerals from surrounding soil that lowers freezing point of depression

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