Question

Name the gases liberated when
a) metal reacts with dil.acids. b) carbonates and hydrogen carbonates react with acids
How will you test for the gases evolved in both the cases?​

Answer 1

Answer:

1. if metal reacts with acid then the hydrogen gas is formed .for example when sodium react with dilute hydrochloric acid then salt are formed and hydrogen gas evolved .
2. if carbonate react with acid then also hydrogen gas are evolved.

Test

1. bring a burning candle near the gas only hydrogen gas burns making a pop sounds .This shows that hydrogen gas evolved in the reaction.