Question
Asked Sep 29, 2019
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What is the mole fraction of acetic acid in vinegar? Vinegar is an
aqueous solution that contains 5.00 % by mass acetic acid. Acetic acid is
CH3COOH and has a molar mass of 60.1 g/mol.
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Expert Answer

Step 1

Given:

5.00% by mass acetic acid in vinegar.

Molar mass of acetic acid = 60.1 g/mol.

Assume that we have 100 g of solution.

Solution will contain 5.00 g of acetic acid and 95.0 g of water.

Step 2

Calculation for number of moles of acetic acid:

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mass number of moles molar mass 5.00 g 60.1 g/mol number of moles = number of moles = 0.0832 moles.

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Step 3

Calculation for number o...

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mass number of moles molar mass 95.0 g number of moles 18.02 g/mol number of moles 5.272 moles

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