Carboxylic acids react with active metals (Na, K, Ca and Mg) to form their salt and_:
Correct answer: D. H2 gas
- A. H2O
- B. CO2 only
- C. H2O and CO`2
- D. H2 gas
Explanation
Carboxylic acids react with active metals (Na, K, Ca, Mg etc) to form their salts with the evolution of hydrogen gas. R-COOH + active metal → Salt+ H2 CH3COOH+2Na → 2CH3COO-Na+ +CO2 +H2
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About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
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