Question

which of following solution of acetic acid in water can be used as preservation

Answer 1

,acetic acid is a colourless liquid organic compound with the chemical formula CH3COOH (also written as CH3CO2H or C2H4O2). When undiluted, it is sometimes called glacial acetic acid. Vinegar is roughly 3–9% acetic acid by volume, making acetic acid the main component of vinegar apart from water. Acetic acid has a distinctive sour taste and pungent smell. In addition to household vinegar, it is mainly produced as a precursor to polyvinyl acetateand cellulose acetate. Although it is classified as a weak acid, concentrated acetic acid is corrosive and can attack the skin.