Question

Which of the following are anionic detergents?

(i) Sodium salts of sulphonated long-chain alcohol.

(ii) Ester of stearic acid and polyethylene glycol.

(iii) Quarternary ammonium salt of amine with acetate ion.

(iv) Sodium salts of sulphonated long-chain hydrocarbons.

Answer 1

(i) Sodium salts of sulphonated long-chain alcohol.

(iv) Sodium salts of sulphonated long-chain hydrocarbons.

Explanation:

Sodium salts of sulphonated long-chain alcohol and sodium salts of sulphonated long-chain hydrocarbons are anionic detergents e.g., Sodium lauryl sulphate \[\ce{CH3(CH2)10CH2OSO3– Na+}\] and sodium dodecylbenzene sulphonate.