Question

Name the gas that is liberated when a dilute acid reacts with a metal .What happens when a

burning candle is brought near the gas?​

Answer 1

Explanation:

When a metal reacts with a dilute acid hydrogen gas is released . For ex when Mg reacts with dil.HCl, we get MgCl2 and Hydrogen gas is released.

Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

When a burning candle is brought near the test tube a pop sound is heard , which proves that Hydrogen gas is released.

Answer 2

Answer:

co2 ,when we brought a burning candle near to this gas, then candle will be extinguised. Hydrogen gas is released when dilute acid react with a metal, when we brought a burning candle near to this gas then we shall hear a pop sound. Hydrogen gas is released when a metal reacts with dilute acid.