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Home » Consider the reactions: (a) (b) (c) (d) No change is observed What inference do you draw about the behavior of and from these reactions?
Consider the reactions: (a) \mathrm{H}_{3} \mathrm{PO}_{2}(a q)+4 \mathrm{AgNO}_{3}(\mathrm{aq})+2 \mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow \mathrm{H}_{3} P O_{4}(a q)+4 \mathrm{Ag}_{(s)}+ 4 \mathrm{HNO}_{3}(a q) (b) H_{3} P O_{2}(a q)+2 C u S O_{4}(a q)+2 H_{2} O_{(l)} \rightarrow H_{3} P O_{4}(a q)+2 C u_{(s)}+ H_{2} S O_{4}(a q) (c) \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}_{(l)}+2\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]_{(a q)}^{+}+3 \mathrm{OH}_{(a q)}^{-} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COO}_{(a q)}^{-}+2 \mathrm{Ag}_{(s)}+ 4 \mathrm{NH}_{3}(\mathrm{aq})+2 \mathrm{H}_{2} \mathrm{O}_{(l)} (d) \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}_{(\mathrm{l})}+2 \mathrm{Cu}_{(a q)}^{2+}+5 \mathrm{OH}_{(a q)}^{-} \rightarrow No change is observed What inference do you draw about the behavior of \mathrm{Ag}^{+}and C u^{2+} from these reactions?
CBSE | Chemistry | Class 11 | Exercise 1 | NCERT | Redox Reactions
Consider the reactions: (a) \mathrm{H}_{3} \mathrm{PO}_{2}(a q)+4 \mathrm{AgNO}_{3}(\mathrm{aq})+2 \mathrm{H}_{2} \mathrm{O}_{(l)} \rightarrow \mathrm{H}_{3} P O_{4}(a q)+4 \mathrm{Ag}_{(s)}+ 4 \mathrm{HNO}_{3}(a q) (b) H_{3} P O_{2}(a q)+2 C u S O_{4}(a q)+2 H_{2} O_{(l)} \rightarrow H_{3} P O_{4}(a q)+2 C u_{(s)}+ H_{2} S O_{4}(a q) (c) \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}_{(l)}+2\left[\mathrm{Ag}\left(\mathrm{NH}_{3}\right)_{2}\right]_{(a q)}^{+}+3 \mathrm{OH}_{(a q)}^{-} \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COO}_{(a q)}^{-}+2 \mathrm{Ag}_{(s)}+ 4 \mathrm{NH}_{3}(\mathrm{aq})+2 \mathrm{H}_{2} \mathrm{O}_{(l)} (d) \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}_{(\mathrm{l})}+2 \mathrm{Cu}_{(a q)}^{2+}+5 \mathrm{OH}_{(a q)}^{-} \rightarrow No change is observed What inference do you draw about the behavior of \mathrm{Ag}^{+}and C u^{2+} from these reactions?

Solution:

\mathrm{Ag}^{+}and C u^{2+} acts as oxidizing specialist in responses (I) and (ii) individually.

In response (iii), \mathrm{Ag}^{+}oxidizes \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO} to \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COO}^{-}

In response (iv), C u^{2+} can’t oxidize C_{6} H_{5} C H O.

In this way, A g^{+}is a more grounded oxidizing specialist contrasted with C u^{2+}.

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