A salt X is formed and a gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate. Name the salt X and the gas evolved. Describe an activity and draw the diagram of the apparatus to prove that the evolved gas is the one which you have named. Also, write a chemical equation of the reaction involved.

AcademicChemistryNCERTClass 10

When ethanoic acid reacts with sodium hydrogen carbonate, a brisk effervescence of carbon dioxide gas is evolved. The salt (X) formed is sodium ethanoate.
 Activity: 
  1. Take a boiling tube and add 0.5gm of sodium hydrogen carbonate to it. To this, add 2 ml of dilute ethanoic acid through a thistle funnel.
  2. You will notice a brisk effervescence of carbon dioxide gas.
  3. Take a test tube containing lime water and pass the carbon dioxide gas through it.
Observation: The lime water turning milky. Carbon dioxide is the only gas that turns lime-water milky.
Conclusion: This activity proves that carbon dioxide gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate.
Given below is the experimental set up for the above activity:
The chemical equation of the reaction is given below:
$CH_3COOH + NaHCO_3 → CH_3COONa +CO_2 + H_2O$ 
raja
Updated on 10-Oct-2022 13:27:41

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