SOLVED:The solubility of KNO3 is 155 g per 100 g of water at 75^∘ C and 38.0 g at 25^∘ C. What mass (in grams) of KNO3 will crystallize out of solution if exactly 100 g of its saturated solution at 75^∘ C is cooled to 25^∘ C ?

The solubility of KNO3 (MW=101.1 g/mol) in water at 65°C is 12.4 molal, and at 0°C it is only 1.2 molal. In contrast, the solubility of NaCl (58.44 g/mol) is 7.1 molal at 65°C and 6.02 molal at 0°C.200 grams of water is saturated with both KNO3 and NaCl (12.4 molal and 7.1 molal respectively) at 65°C. It is then quickly cooled to 0°C.a. What mass of KNO3 will precipitate?

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