Calculate the molarity of a solution prepared by dissolving 78.6g of KF in enough water to produce 225ml of solution. (at mass of F= 19g/mol, K= 39.10g/mol

Md Ariful Islam

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molarity = amount / liter amount n = m/Mw m-mass Mw - molecular mass in the question m = 78.6 g Mw = 58.1 g/mol n = 78.6/58.1 = 1.35 mol, but it is in 225 ml, and in 1000 ml or 1 L it would be X X = 1.35*1000/225 = 6 M
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