Practice question
Question
A 400 mL solution contains 14.6 g of HCl and has a density of 1.02 g/mL. What is its molarity? (Molar mass: HCl = 36.5 g/mol)
Explanation
Moles of HCl = 14.6/36.5 = 0.4 mol. Volume = 0.4 L. Molarity = 0.4/0.4 = 1 M.
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