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The density of 2.5 M acetic acid in wat...

The density of `2.5 M` acetic acid in water is `1.02g ml^(-1)`. Calculate the molality of the solution.

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Mass of 1L solution `=(1.02xx1000)=1020 g`
Moles of acetic acid in solution `=60xx2.5=150 g`, Mass of water `=1020-150=870 g`
Molality `=(2.5)/(0.870)=2.87 m`.
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