alleryEsterification reaction is usually carried out in the presence of:
AConcentrated HCl
BConcentrated H2SO4
CSodium hydroxide
DCalcium carbonate
Answer & Solution
Correct answer: B. Concentrated H2SO4
1. Esterification is alcohol + carboxylic acid -> ester + water.
2. The reaction is reversible and needs a dehydrating catalyst.
3. Concentrated H2SO4 absorbs water and pushes equilibrium toward ester.
4. So conc. H2SO4 is the typical catalyst used.
5. NaOH would hydrolyse the ester instead of forming it.
_Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_
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