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Question

Chemistry Question on uses of carboxylic acids

Vinegar contains:

A

100% acetic acid

B

10 - 20% acetic acid

C

6% - 10% acetic acid

D

1% acetic acid

Answer

6% - 10% acetic acid

Explanation

Solution

Acetic acid is ethanoic acid with the chemical formula CH3COOH.

  • The unique smell of vinegar is a result of acetic acid, a byproduct of fermentation.
  • Vinegar is an aqueous solution that contains 6%-10% acetic acid CH3COOH dissolved in water
  • Acetic acid is the main ingredient in vinegar that imparts a strong fragrance and a sour flavour.
  • It has a pHof around 2.4.

Therefore, Vinegar contains 6% to 10% acetic acid dissolved in water.