Answer:
All
metal carbonates and hydrogen carbonates react with acids to form a
corresponding salt, carbon dioxide and water.
(1)
Metal carbonate + Acid 
Salt + Carbon
dioxide + Water,
Metal hydrogen carbonate + Acid 
Salt
+ Carbon dioxide + Water (1)
For example, sodium carbonate reacts with dilute hydrochloric
acid as follows
(1)
Sodium hydrogen carbonate reacts with dilute
hydrochloric acid as follows
(1)
On passing the liberated gas 
through
lime water 
the white precipitates of 
is obtained.
On passing excess carbon dioxide, the solution of calcium
hydrogen carbonate is obtained which is soluble in water.
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