Homework Answers
Partial molar volume is defined as change in volume when 1 mole of a solute is added to the solvent( or mixture).
In this case, 168 mL of ethanol is added
AS, density =Mass/Volume
So, mass of ethanol added = density of ethanol * Volume of ethanol added
= 0.789g/mL * 168mL
= 132.552 g
So, moles of ethanol added = Mass added/ molar weight of ethanol
= 132.552g/ 46g/mol
=2.88 moles
So partial molar volume = 153mL/2.88mol
=53.1 mL/mol (Answer)
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