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19 Nov 2019
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Salt, NaCI, has a solubility of 35.7 g per 100 g of water at 0 degree C. The solubility of salt in water does not vary appreciably with temperature. NaCl is an electrolyte that is commonly used to melt ice by lowering its melting point. What is the lowest possible melting point for ice that could be obtained considering the solubility of NaCl in water? The K_l for H_2 O is 1.86 degree C/m. A sample of an unknown nonelectrolyte is dissolved in 10.9303 g of and produces a solution that freezes at 43.2 degree C. If the pure benzophenone melted at 48.1 degree C, what is the molecular weight of the unknown compound? The K_l for benzophenone is 9.8 degree C/m.
Stuck
Salt, NaCI, has a solubility of 35.7 g per 100 g of water at 0 degree C. The solubility of salt in water does not vary appreciably with temperature. NaCl is an electrolyte that is commonly used to melt ice by lowering its melting point. What is the lowest possible melting point for ice that could be obtained considering the solubility of NaCl in water? The K_l for H_2 O is 1.86 degree C/m. A sample of an unknown nonelectrolyte is dissolved in 10.9303 g of and produces a solution that freezes at 43.2 degree C. If the pure benzophenone melted at 48.1 degree C, what is the molecular weight of the unknown compound? The K_l for benzophenone is 9.8 degree C/m.
Elin HesselLv2
3 Jan 2019