Question

Which gas is usually liberated when an acid reacts with a metal? Write one chemical
equation. How will you test for the presence of this gas?​

Answer 1

Explanation:

Hydrogen gas.

Zn + H2SO4 = ZnSO4 + H2

Hydrogen burns with a pop sound. So, its presence can be tested by placing a burning candel near it.

Answer 2

Explanation:

heee we have taken magnesium and hydrochloric acid and reacted them as could see that magnesium chloride came with a gas called hydrogen . we can test the presence of gas we will burn a matchstick above the experiment glass then we will observe a pop sound that shows that the presence of hydrogen