Answer: CH3COOH, becomes DEPROTONATED.
Step-by-step explanation:
Vinegar is a common natural preservative and sour liquid that is made from fermentation of sugar and water solution. Vinegar contain acetic acid and has antimicrobial activity. The acetic acid in vinegar kills microorganisms and stop food spoilage. The acetic acid cross the membrane and become deprotonated I.e removal of proton in the cytoplasm thereby, disturbing normal pH.