Question

When gas is usually liberated when an acid reacts with metal? illustrate with an example. How will you get test for the presence of this

Answer 1

CorectQ. Which gas is usually liberated when an acid reacts with metal? illustrate with an example. How will you get test for the presence of this.

Answer :-

Gas :- Hydrogen gas ( H2↑)

Reaction:- $2Na + 2HCl → 2NaCl + H_2$

Test :- When we burn a flame near it it will produces pop sound.

Explanation :-

When an acids reacts with metal it produces metal salt and hydrogen gas.

We know that acids are able to gain electrons and this electrons is given by Metals to reduce the hydrogen so that the the negative radicals get combined with positive radicals.

The products formed is metal salt which is neutral in nature and hydrogen gas is released which is highly inflammable gas and burns with pop sound.

Answer 2

HEY FRIEND HERE IS UR ANSWER ,

When an acid react with a metal it liberates hydrogen gas.

     E.g., Zn(s) + 2HCl(aq) ZnCl2 (aq) + H2(g)

To test the presence of H2 gas, bring a burning splinter near the mouth of the test tube where H2 gas is released, the match stick bums with a pop sound.

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