Question

what happens when sodium hydrogen carbonate is heated

Answer 1

It breaks down into Sodium Carbonate, water and carbon dioxide

NaHCO3-----> Na2CO3+CO2+H2O

Answer 2

$\mathfrak{\underline{Answer}}$

A colourless odourless gas evolves which turns lime water milky and has no effect on acidified K₂Cr₂O₇ paper and KMnO₄ paper .

The gas also has brisk effervescence .

Explanation :-

When sodium hydrogen carbonate is heated the following reaction takes place :-

2 Na HCO₃ ======> Na₂CO₃ + H₂O + CO₂

The sodium hydrogen carbonate upon thermal decomposition forms :-

→ Sodium carbonate .

→ Water vapour .

→ Carbon dioxide .

The test for water vapour is :-

A colourless odourless gas whose liquid turns copper sulphate bluish when reacted with .