Complete the following chemical reactions.

(i) \( PbS_{(g)}+H_{2}O_{2(aq)}\rightarrow\)

(ii) \( MnO^{-} _{4aq}+H_{2}O_{2(aq)}\rightarrow\)

(iii) \( CaO_{(g)}+H_{2}O_{(g)}\rightarrow\)

(iv) \( AlCl_{3(g)}+H_{2}O_{(l)}\rightarrow\)

(v) \( Ca_{3}N_{2(g)}+H_{2}O_{(l)}\rightarrow\)

Classify the above into 

(a) Hydrolysis, 

(b) Redox and 

(c) Hydration reactions.

Asked by Abhisek | 1 year ago |  43

1 Answer

Solution :-

(i)

\( PbS_{(g)}+4H_{2}O_{2(aq)}→ PbSO _{4(s)}+4H_{2}O_{(l)} \)

H2O2 is acting as an oxidizing agent in the reaction. Hence, it is a redox reaction

(ii) \( 2MnO^{-}_{4(aq)}+5H_{2}O_{2(aq)}+6H^{+}_{(aq )}\)

\( \rightarrow 2Mn^{2+}_{(aq)}+8H_{2}O_{(l)}+5O_{2(g)}​ H_{2}O_{2(aq)}\)

 is acting as a reducing agent in the acidic medium, thereby oxidizing \( MnO^{-}_{4(aq)}\)

Hence, the given reaction is a redox reaction.

(iii)

\( CaO_{(g)}+H_{2}O_{(g)}\rightarrow Ca(OH)_{2(aq)} \)

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

 (iv)

\( 2AlCl_{3(g)}+3H_{2}O_{(l)}\rightarrow Al_{2}O_{3(s)}+6HCl_{(aq)} \)

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

(v)

\( Ca_{3}N_{2(s)}+6H_{2}O_{(l)}\rightarrow 3Ca\left ( OH \right )_{2(aq)}+2NH_{3(g)} \)

The reactions in which a compound reacts with water to produce other compounds are called hydrolysis reactions. The given reaction represents hydrolysis of Ca3N2.

Answered by Pragya Singh | 1 year ago

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