Complete the following chemical reactions.(i) PbS (s) + H2O2 (aq) → PbSO4 + H2O(ii) MnO–4 aq + H2O2(aq) → 2Mn+2 + 8H2O + 5O2(iii) CaO (s) + H2O (g) → Ca (OH) 2(iv) AlCl3 (g)+ H2O(l) → Al (OH)3 + 3HCl(v) Ca3 N2 (s) + H2O → 3Ca (OH) 2 + 2NH3

Q. 204.3( 22 Votes )

Complete the following chemical reactions.

(i) PbS (s) + H₂O₂ (aq) → PbSO₄ + H₂O

(ii) MnO^–₄ aq + H₂O₂(aq) → 2Mn⁺² + 8H₂O + 5O₂

(iii) CaO (s) + H₂O (g) → Ca (OH) ₂

(iv) AlCl₃ (g)+ H₂O(l) → Al (OH)₃ + 3HCl

(v) Ca₃ N₂ (s) + H₂O → 3Ca (OH) ₂ + 2NH₃

Class 11th NCERT - Chemistry Part-II 9. Hydrogen

Answer :

(i) In the given reaction H₂O₂ is oxidizing agent and hence the reaction is a redox reaction.

(ii) In the given reaction H₂O₂ is reducing agent and hence the reaction is a redox reaction.

(iii) The reactions in which a compound reacts with water to produce other compounds are called hydrolysis reactions. So the given reaction is hydrolysis.

(iv) The reactions in which a compound reacts with water to produce other compounds are called hydrolysis reactions. So the given reaction represents hydrolysis of AlCl₃.

(v) The reactions in which a compound reacts with water to produce other compounds are called hydrolysis reactions. The given reaction represents hydrolysis of Ca₃ N₂.

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