Carbon & its Compounds (C10)

The formulae of four organic compounds are given below:

  • A: C2H4
  • B: CH3COOH
  • C: C2H5OH
  • D: C2H6

(i) Which one of these compounds A, B, C or D is a saturated hydrocarbon?

(ii) Identify the organic acid and give its structural formula.

(iii) Which of the above compounds when heated at 443K in the presence of concentrated H2SO4 forms ethene as the major product? What is the role played by concentrated H2SO4 in this reaction? Also write the chemical equation involved.

(iv) Give a chemical equation when B and C react with each other in presence of concentrated H2SO4. Name the major product formed and mention one of its important use.

Answer

(i) D is a saturated hydrocarbon.

(ii) B is an organic acid.

Structural formula:

(iii) C is the compound.

Concentrated H2SO4 acts as a dehydrating agent and removes a water molecule from ethanol.

C2H5OH → C2H4 + H2O

(iv) CH3COOH + C2H5OH → CH3COOC2H5 + H2O

Major product is Ester and it is used in making perfumes and flavouring agents.