CBSE Class 10 Science 2019 · Paper 31/2/3 · Question 5(a)

(i) Reaction with a base (acidic nature): ethanoic acid reacts with sodium hydroxide to give sodium ethanoate and water, ${\text{CH}}_3\text{COOH}+\text{NaOH}\to {\text{CH}}_3\text{COONa}+{\text{H}}_2\text{O}$, and it turns blue litmus red; ethanol does not react with sodium hydroxide and has no effect on litmus. (ii) Reaction with sodium hydrogencarbonate (or sodium carbonate): ethanoic acid gives brisk effervescence of carbon dioxide, which turns lime water milky, ${\text{CH}}_3\text{COOH}+{\text{NaHCO}}_3\to {\text{CH}}_3\text{COONa}+{\text{H}}_2\text{O}+{\text{CO}}_2$; ethanol gives no effervescence.