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Complete the following chemical reactions. (i) $\mathrm{Pb} S_{(g)}+\mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow$ (ii) $\mathrm{MnO}_{4 a q}^{-}+\mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow$ (iii) $\mathrm{CaO}_{(g)}+\mathrm{H}_{2} \mathrm{O}_{(g)} \rightarrow$ (iv) $A l C l_{3(g)}+H_{2} O_{(l)} \rightarrow$ (v) $\mathrm{Ca}_{3} \mathrm{~N}_{2(g)}+\mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow$ Classify the above into (a) Hydrolysis, (b) Redox and (c) Hydration reactions.
Complete the following chemical reactions. (i) $\mathrm{Pb} S_{(g)}+\mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow$ (ii) $\mathrm{MnO}_{4 a q}^{-}+\mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow$ (iii) $\mathrm{CaO}_{(g)}+\mathrm{H}_{2} \mathrm{O}_{(g)} \rightarrow$ (iv) $A l C l_{3(g)}+H_{2} O_{(l)} \rightarrow$ (v) $\mathrm{Ca}_{3} \mathrm{~N}_{2(g)}+\mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow$ Classify the above into (a) Hydrolysis, (b) Redox and (c) Hydration reactions.
CBSE | Chemistry | Class 11 | Exercise 1 | Hydrogen | NCERT
Complete the following chemical reactions. (i) $\mathrm{Pb} S_{(g)}+\mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow$ (ii) $\mathrm{MnO}_{4 a q}^{-}+\mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow$ (iii) $\mathrm{CaO}_{(g)}+\mathrm{H}_{2} \mathrm{O}_{(g)} \rightarrow$ (iv) $A l C l_{3(g)}+H_{2} O_{(l)} \rightarrow$ (v) $\mathrm{Ca}_{3} \mathrm{~N}_{2(g)}+\mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow$ Classify the above into (a) Hydrolysis, (b) Redox and (c) Hydration reactions.

Solution:

(I)

$\mathrm{PbS}_{(g)}+4 \mathrm{H}_{2} \mathrm{O}_{2(a q)} \rightarrow \mathrm{PbSO}_{4(s)}+4 \mathrm{H}_{2} \mathrm{O}_{(l)}$

$\mathrm{H}_{2} \mathrm{O}_{2}$ is going about as an oxidizing specialist in the response. Consequently, it is a redox response

(ii)

$2 \mathrm{MnO}_{4(a q)}^{-}+5 \mathrm{H}_{2} \mathrm{O}_{2(a q)}+6 \mathrm{H}_{(a q)}^{+} \rightarrow 2 \mathrm{Mn}_{(a q)}^{2+}+8 \mathrm{H}_{2} \mathrm{O}_{(l)}+5 \mathrm{O}_{2(g)} \mathrm{H}_{2} \mathrm{O}_{2(a q)}$ is going about as a

diminishing specialist in the acidic medium, accordingly oxidizing $M n O_{4(a q)}^{-}$

Consequently, the given response is a redox response.

(iii)

$\mathrm{CaO}_{(g)}+\mathrm{H}_{2} \mathrm{O}_{(g)} \rightarrow \mathrm{Ca}(\mathrm{OH})_{2(a q)}$

The responses wherein a compound responds with water to create different mixtures are called hydrolysis responses. The given response is hydrolysis.

(iv)

$2 \mathrm{AlCl}_{3(g)}+3 \mathrm{H}_{2} \mathrm{O}_{(t)} \rightarrow \mathrm{Al}_{2} \mathrm{O}_{3(s)}+6 \mathrm{HCl}_{(\text {aq })}$

The responses wherein a compound responds with water to create different mixtures are called hydrolysis responses. The given response addresses hydrolysis of $\mathrm{AlCl}_{3}$.

(v)

$\mathrm{Ca}_{3} \mathrm{~N}_{2(s)}+6 \mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow 3 \mathrm{Ca}(\mathrm{OH})_{2(a q)}+2 \mathrm{NH}_{3(g)}$

The responses wherein a compound responds with water to create different mixtures are called hydrolysis responses. The given response addresses hydrolysis of $\mathrm{Ca}_{3} \mathrm{~N}_{2}$.

i

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