Eduprobe
Question:
When you add a few drops of acetic acid to a test-tube containing sodium bicarbonate powder, which one of the following is your observation?
No reaction takes place
A colourless and odourless gas is released with brisk effervescence
A brown coloured gas is released with brisk effervescence
Colour of solution changes
Solution:
CH3COOH + NaHCO3 → CH3COONa + CO2 + H2O
CO2 is formed in this reaction. It is a colourless and an odourless gas. Brisk effervescence of carbon dioxide gas is obtained. All metal carbonates and hydrogencarbonates react with acids to give a corresponding salt, carbon dioxide and water.