Subjective Type

(a) Explain why metals usually do not liberate hydrogen gas with dilute nitric acid. (b) Name two metals which can however, liberate hydrogen gas from very dilute nitric acid.

Solution

(a) Metals do not liberate hydrogen gas with nitric acid because nitric acid is string oxidizing agent so, as soon as hydrogen gas is formed in the reaction between a metal and dilute nitric acid, the nitric acid oxidise this hydrogen to water.

(b) Magnesium and Manganese are the two metals which liberate hydrogen gas from very dilute nitric acid.

SIMILAR QUESTIONS

Metals and Non - metals

Iron is rendered passive by treatment with concentrated:

Metals and Non - metals

(a) What happens when calcium reacts with chlorine? Write an equation of the reaction which takes place. (b) What happens when magnesium reacts with very dilute acid? Write an equation for the reaction involved.

Metals and Non - metals

Very dilute nitric acid reacts with iron to produce hydrogen.

Metals and Non - metals

The metal which reacts with $$HNO_{3}$$ to give five different products depending upon the concentration of the acid is :

Metals and Non - metals

Carbon can reduce copper oxide to copper but not CaO to Ca. Why?

Metals and Non - metals

Pure conc. $$ HNO_3 $$ makes iron passive as the surface is covered with protective layer of

Metals and Non - metals

Iron when treated with concentrated nitric acid

Metals and Non - metals

Hot and conc. nitric acid when reacts with copper, the gas obtained is

Metals and Non - metals

Reaction of zinc with cold and very dilute nitric acid yields

Metals and Non - metals

Zn gives hydrogen gas with $$ H_2SO_4 $$ and $$HCl$$ but not with $$ HNO_3 $$ because

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