Question

A student adds a spoon full of powdered sodium hydrogen carbonate to a flask containing ethanoic acid. List two main observations that he must note in his notebook about the reaction that takes place. Also write the chemical equation for the reaction

Answer 1

NaHCO3+CH3COOH ---->CH3COONa+H2O+CO2
Sodium acetate is formed and CO2 gas is released
Hope it helped

Answer 2

He must note brisk effervescence.
This is due to liberation of CO2 gas.

CH3COOH + NaHCO3 ------> CH3COONa + H2O + CO2.

When this evolved gas is passed through lime water , it turns milky due to the formation of calcium carbonate.
Ca(OH)2 + CO2 -----> CaCO3 + H2O.


- Maheshwaran.