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Chapter 19: Problem 5

Discuss the action of the following elements with conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\). (a) Zinc (b) Copper (c) Iron

Short Answer

Expert verified
Zinc and Iron react with concentrated sulfuric acid forming zinc sulfate and iron(II) sulfate respectively, along with the release of hydrogen gas. Copper does not react with concentrated sulfuric acid.

Step by step solution

01

Reaction of Zinc with conc. H2SO4

Zinc is a reactive metal. When it reacts with concentrated sulfuric acid, it displaces hydrogen and forms Zinc Sulphate along with the release of hydrogen gas. The reaction can be represented as: \(Zn + H_2SO_4 \rightarrow ZnSO_4 + H_2\)
02

Reaction of Copper with conc. H2SO4

Copper is less reactive than Hydrogen and does not displace hydrogen from sulfuric acid. Therefore, Copper does not react with non-oxidizing acids like concentrated sulfuric acid under normal conditions.
03

Reaction of Iron with conc. H2SO4

Iron, being more reactive than Hydrogen, can displace hydrogen from sulfuric acid. Hence, when Iron reacts with concentrated sulfuric acid, iron(II) sulfate is formed along with the release of hydrogen gas. The reaction is given by: \(Fe + H_2SO_4 \rightarrow FeSO_4 + H_2\)

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