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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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snyder-13275 snyder-13275
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11 years ago
An aqueous solution is 3.50 % by mass hydrochloric acid, HCl, and has a density of 1.02 g/mL.
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#1
11 years ago
For a 100 g solution,
mol HCl = (3.5 g)(mol / 36.5 g) = 0.09589 mol HCl

mol H2O = (100 g - 3.5 g)(mol / 18 g) = 5.361 mol H2O

mole fraction = (0.09589 mol HCl) /(0.09589 mol HCl + 5.361 mol H2O) = 0.0176
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