A KNO3 solution containing 32 g of KNO3 per 100.0 g of water is cooled from...

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A KNO3 solution containing 32 g of KNO3 per 100.0 g of water is cooled from 37 ∘C to 0 ∘C . What mass of KNO3 will precipitate? PLEASE SHOW WORK!

Answer 1

Answer #1

m = 32g of KNO3 per 100 g

solubility at 0 = 13 g/100g then

32-13 = 19 g of KNO3 will be NOT in solution

that is, the precipitate = 19 g of KNO3, all other 13 g remain in solution

Answer 2

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