Question

Examine the given structural formulae and select the esters. You may also identify the chemicals required for their preparation. 

1. CH₃ – CH₂ – COO – CH₃ 

2. CH₃ – CH₂ – COOH 

3. CH₃ – CH₂ – CO – CH₃ 

4. CH₃ – OH 

5. CH₃ – CH₂ – CH₂ OH 

6. CH₃ – COOH 

7. CH₃ – COO – CH₂ – CH₂ – CH₃

Answer 1

1. CH₃ – CH₂ – COO – CH₃ 

7. CH₃ – COO – CH₂ – CH₂ – CH₃ are esters 

1. CH₃ – CH₂ – COO – CH₃

CH₃ – CH₂ – COOH + OH – CH₃ + Conc.

H₂SO₄→ CH₃ – CH₂ – COO – CH₃ + H₂O 

7. CH₃ – COO – CH₂ – CH₂ – CH₃ 

CH₃ – COOH + OH – CH₂ – CH₂ – CH₃ + Conc.

H₂SO₄ → CH₃ – COO – CH₂ – CH₂ – CH₃ + H₂O