Acids react with metals to give salt and absorb hydrogen gas while bases do not react with metals and absorb hydrogen gas.

Sagot :

Answer:

Hydrogen gas is not evolved when a metal reacts with nitric acid. It is because

HNO

3

is a strong oxidizing agent. It oxidizes the

H

2

to water and itself gets reduced to any of the nitrogen oxides

N

2

O

,

NO

,

NO

2

. But magnesium

(

Mg

)

and manganese

(

Mn

)

react with very dilute

HNO

3

to evolve

H

2

gas.