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
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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