Question

Vinegar used as preservations for pickels is having _ precent of acetic acid

Answer 1

Pickling was widely used to preserve meats, fruits and vegetables in the past, but today is used almost exclusively to produce "pickles," or pickled cucumbers. Pickling uses the preservativequalities of salt (see above) combined with the preservativequalities of acid, such as acetic acid (vinegar).

Answer 2

Vinegar is 4% acetic acid (CH3COOH)