Q. 204.3( 22 Votes )

Complete the following chemical reactions.

(i) PbS (s) + H2O2 (aq) PbSO4 + H2O

(ii) MnO4 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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