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.

Answer:

X = CH3COONa

The gas evolved = CO2

When ethanoic acid reacts with sodium hydrogen carbonate with the production of sodium ethanoate and producing carbon-di-oxide gas.

CH3COOH + NaHCO3 → CH3COONa + H2O + CO2

Set up the experiment as shown in the figure.

  • Take a spoon full of Sodium Hydrogen Carbonate in a test tube and add 2ml of dilute ethanoic acid.
  • Brisk effervescence occur in testtube.
  • Pass the produced gas into lime water
  • Lime water turns milky confirming the evolution of CO2

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