Question

An organic compound with molecular formula C₂H₄O₂.produces brisk effervescence on additionof sodium carbonate /bicarbonate. Answer the following:a. Identify the organic compound.b. Write the chemical equation for the above reaction. c. Name the gas evolved.d. How will you test the gas evolved? e. List two important uses of the above compound.

Answer 1

Dear Student,

◆ Answers with explanation -

(a) Unknown organic compound is erhanoic acid (CH3COOH).

(b) Ethanoic acid react with sodium carbonate to form sodium acetate with effervescence of CO2 gas.

2CH3COOH + Na2CO3 --> 2CH3COONa + CO2 + H2O

(c) CO2 gas is evolved which produces brisk effervescence.

(d) Presence of CO2 gas is tested by passing it through lime water. It turns the limewater milky.

CO2 + Ca(OH)2 --> CaCO3 + H2O

(e) Uses of ethanoic acid -

1. industrial solvent
2. food preservative
3. production of polymers
4. cancer drugs

Hope this helps you...