# Vinegar contains (among other things) acetic acid. What is the molarity of acetic acid (HC2H3O2) in vinegar that contains 4.0% acetic acid by weight and having a density of 1.02 g/mL?

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Vinegar contains (among other things) acetic acid. What is the molarity of acetic acid (HC2H3O2) in vinegar that contains 4.0% acetic acid by weight and having a density of 1.02 g/mL?

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Step 1

Solution stoichiometry involves the calculation of concentration of solutions in the given conditions of volumes, moles etc.

Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are used to calculate the molarity of solution. The relation between moles, volume and molarity is as given below;

Step 2

Mass percentage of acetic acid in vinegar = 4.0 %

Hence 4.0 g of acetic acid is present in 100 g of solution

Molar mass of acetic acid = 60 g/mol

Step 3

Density of solution = 1.02 g/mL

Mass of solution = 100 g (from 4.0 ...

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