Question

Ethanoic acid turns blue litmus solution ............

• A. red
• B. purple
• C. pink
• D. colourless

Answer 1

The correct option is A

red

When dissolved in water, acetic acid undergoes dissociation to form hydrogen (H⁺) ion. Because of the release of a proton, acetic acid has an acidic character. It turns blue litmus paper red, indicating that it is acidic in nature. However, it is a weak acid because it does not dissociate completely in aqueous solution.

$C{H}_{3}COOH\to C{H}_{3}CO{O}^{-}+H^{+}$