with conc H2SO4 as catalyst CH3COOH + C2H5OH → CH3COOC2H5 + H2O

Analysis of the Question

The reaction provided is: CH₃COOH (Ethanoic acid) + C₂H₅OH (Ethanol) → CH₃COOC₂H₅ (Ethyl ethanoate) + H₂O (Water)

You are asked to identify the specific type of chemical reaction occurring when a carboxylic acid reacts with an alcohol in the presence of a concentrated sulfuric acid catalyst.

Concept Explanation

This reaction is a classic example of esterification.

• The Reactants: A carboxylic acid (CH₃COOH) and an alcohol (C₂H₅OH).
• The Catalyst: Concentrated sulfuric acid (H₂SO₄) acts as both a catalyst and a dehydrating agent, which helps remove the water molecule formed during the reaction.
• The Product: The main product is an ester (CH₃COOC₂H₅), which is characterized by the functional group -COOR. Esters are generally known for their sweet, fruity smells.

Let's look at why the other options are incorrect:

• Condensation: While esterification is technically a type of condensation reaction (because a small molecule like water is removed), "esterification" is the more specific and accurate term for the reaction between an acid and an alcohol.
• Saponification: This is the exact opposite of esterification; it is the alkaline hydrolysis of an ester to produce soap and glycerol.
• Neutralization: This is the reaction between an acid and a base to form salt and water (e.g., HCl + NaOH → NaCl + H₂O).

Step-by-Step Solution

1. Identify the functional groups: We have a carboxylic acid (-COOH) and an alcohol (-OH).
2. Observe the reaction type: When these two functional groups combine, the -OH from the acid and the -H from the alcohol combine to form water (H₂O).
3. Identify the product: The remaining parts join to form an ester linkage (-COO-).
4. Conclusion: The process of forming an ester from an acid and an alcohol is defined as esterification.

Correct Answer

The correct option is A.

Exam Tip

Whenever you see a reaction involving an organic acid and an alcohol with concentrated H₂SO₄, immediately look for "esterification" in the options. If you are ever asked about the reverse process (breaking an ester down), remember that saponification is the process used to make soap from fats (which are esters).