The density of a 2.0M solution of acetic acid in water is 1.2 g/ml. What is its molality?
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Weight of acetic acid =2.05×60=123
Weight of the solution =1000×1.02=1020
∴ Weight of water=(1020−123)=897g
∴ Molality =2.05×1000897=2.285
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