Soap is manufactured by the alkaline hydrolysis of
Correct answer: D. natural fats and oils, which are esters of glycerol
- A. ethanol
- B. benzene
- C. starch
- D. natural fats and oils, which are esters of glycerol
Explanation
Boiling a fat with sodium hydroxide splits the three ester linkages and gives sodium salts of long chain fatty acids, the soap, together with glycerol as a valuable by product. Soap cleans because the hydrocarbon tail dissolves in grease while the ionic head remains in the water. Using potassium hydroxide instead gives a softer, more soluble soap.
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About Carboxylic Acid Derivatives
Carboxylic acid derivatives include acid halides, acid anhydrides, esters and amides, formed by replacing the hydroxyl group of a carboxylic acid. Their nomenclature, structures, preparation, hydrolysis and relative reactivity are linked through nucleophilic acyl substitution, which differs from the nucleophilic addition reactions of aldehydes and ketones.
Practise Carboxylic Acids
550 free Carboxylic Acids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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