Question

how will you test for the gas which is liberated when hydrochloric acid reacts with a active metal

Answer 1

To do it we should trap the gas in a test tube then testwith a lighted splint. The positive result is a squeaky pop sound. Hydrochloric acid and reactive metals, eg zinc, react to form a metal chloride and hydrogen gas. Hydrogen gas is characterized by its explosiveness.

Answer 2

Answer:

When hydrochloric acid reacts with metals, it produces hydrogen gas.

Zn+2HCl⟶ZnCl 2  +2H2  ↑

When a match stick lightened placed near hydrogen gas puts out with a pop sound.

Explanation: