A gas is liberated immediately with a brisk effervescence when you add acetic acid to sodium hydrogen carbonate powder in a test tube. Name the gas and describe the test that confirms the identity of the gas.
When acetic acid (CH3COOH) is added to the sodium hydrogen carbonate (NaHCO3) than carbon dioxide gas produce with brisk effervescence.
CH3COOH + NaHCO3 →CH3COONa + CO2↑ + H2O
Observations: The gas turns lime water milky that confirms the identity of CO2 gas.
Ca(OH)2 + CO2 → CaCO3↓ + H2O
