Question

which gas is usually liberated when an acid reacts with a metal. illustrate with an example. how will you test for the presence of this gas

Answer 1

Hey mate!!!

Hydrogen is usually liberated when an acid reacts with a metal.
For example, If you put an iron nail in a test tube containing dilute Hydrochloric acid then we can see some sort of gas is coming out.
If we put a burning matchstick near the mouth of test tube, we will find the gas burn with POP SOUND. This indicates that the gas is Hydrogen


Hope it helps dear friend ☺️✌️✌️

Answer 2

Hola User____________

Here is Your Answer...!!!!!
______________________


☆Actually welcome to the concept of Acid,bases and the salts......and their reactions....

☆Basically if we see. ....we get to know that when An acid reacts with a metal ....then the reactions happens such it's product formed are a salt and the Hydrogen gas is evolved out....

☆For example...

2Na + 2HCl =====> 2NaCl + H2

☆so here the hydrogen is evolved out....to check the presence of the hydrogen gas..the candle with a flame is taken to the gas...such that if the gas makes a popping sound and burst then it's clearly the H2 gas......

_______________________

Hope it helps u.......☺