Question

Metals react with acids to produce respective salts with evolution of
(a) hydrogen gas
(b) oxygen gas
(c) CO2 gas
(d) none of these

Answer 1

Answer

a) hydrogen gas

Explanation

Metals react with acids to produce hydrogen gas along with respective salt.

$\sf Acid + Metal \rightarrow Metal\ salts + H_2 (g)$

This is because metals are electron donor. The hydrogen cation from acids accepts the electron from metal and thus forms hydrogen gas which is liberated as the reaction occurs.

Hydrogen gas can be tested by bringing a burning matchstick near the liberated gas. Hydrogen gas burns with pop sound.

Answer 2

Answer:

a )hydrogen gas

Explanation:

most metals react with dilute acids to form the corresponding salts and realeasing hydrogen gas