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the solubility of potassium floride (KF) is 92g in 100g of H2O at 18 degrees C....

the solubility of potassium floride (KF) is 92g in 100g of H2O at 18 degrees C. would you expect 46 grams of KF to go into solution in 75g of H2O at 18 degrees C? why or why not? (Use math to help rove your point!!)

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Answer #1

solubility of potassium floride (KF) is 92 g in 100 g of H2O at 18 degrees C.

100 g water can dissolve 92 g KF.

75 g water can dissolve = 92 * 75 / 100 = 69 g

so

maximum 69 g KF dissolve in 75 g water.

But

we have 46 g KF which is less than 69 g.

so

Yes. 46 grams of KF to go into solution in 75 g of H2O at 18 degrees C.

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