Multiple choice

Synthetic detergents are

  1. sodium salts of fatty acids

  2. a mixture of sodium carbonate and sodium chloride

  3. calcium salts of hydrochloric acid

  4. a mixture of sodium salts of aromatic and aliphatic sulphonic acids
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Synthetic detergents are typically sodium salts of long-chain alkyl benzene sulphonic acids or similar compounds, which do not form scum with hard water.

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