Question

Acetic acid react with aceytelene in presence of hg

Answer 1

When an acid like ethanoic acid (CH3COOH) reacts with sodium carbonate (Na2CO3), sodium ethanoate (or sodium acetate) is formed. Carbon dioxide is released in the process.  Following is the chemical equation for the reaction.

2CH3COOH + Na2CO3 → 2CH3COONa + H2O + CO2

Following activity describes this reaction

1) In a test tube take 10-15 ml of acetic acid solution.

2) Clamp the test tube with the stand as shown in the figure.

3) Take a rubber cork with two holes, such that they are large enough to allow a stirrer and a delivery tube to pass through them.

4) In another test tube take lime water (calcium hydroxide solution)

5) Add about 0.5 g of Na2CO3 in the test tube containing acetic acid and immediately cover the mouth of the test tube with the rubber cork so that CO2 will not escape. Stir it with the help of the stirrer.

6) Allow the gas evolved to pass in the test tube containing calcium hydroxide solution with the help of delivery tube. You will observe that the lime water turns milky. This shows that the gas evolved is CO2.

Lime water turn milky due to the following reaction:
CO2  +  Ca(OH)2   →  CaCO3  +  H2O