What is the percent concentration of a sodium fluoride solution made by dissolving 65.4 grams of sodium fluoride in 125.1 grams of water?

34.33 %.

Explanation:

W% = [(W of solute NaF)/(W of solution)] x 100.

W of solute NaF = 65.4 g.

W of solution = W of solute NaF + W of water = 65.4 g + 125.1 g = 190.5 g.

∴ W% = [(W of solute NaF)/(W of solution)] x 100 = [(65.4 g)/(190.5 g)] x 100 = 34.33 %.

answer

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