Verified Solution • 2025–26 Session moderate

QNEET-2022-Ch-495: NEET 2022 Chemistry - Class 11 NEET-2022-Ch-495 Solution: Which of the following reactions is a decomposition redox…

Which of the following reactions is a decomposition redox reaction? P4(s)+3OH−(aq)+3H2O(l)→PH3(g)+3H2PO2−(aq)P_4(s) + 3OH^-(aq) + 3H_2O(l) \rightarrow PH_3(g) + 3H_2PO_2^-(aq) 2Pb(NO3)2(s)→2PbO(s)+4NO2(g)+O2(g)2Pb(NO_3)_2(s) \rightarrow 2PbO(s) + 4NO_2(g) + O_2(g) N2(g)+O2(g)→2NO(g)N_2(g) + O_2(g) \rightarrow 2NO(g) Cl2(g)+2OH−(aq)→ClO−(aq)+Cl−(aq)+4H2O(l)Cl_2(g) + 2OH^-(aq) \rightarrow ClO^-(aq) + Cl^-(aq) + 4H_2O(l)

Multiple Choice Options

  • A P 4 (s) + 3OH −- _ (aq) + 3H 2 O(l) →\to _ PH 3 (g) + 3H 2 PO 2−_2^ - 2 _ _ (aq)
  • B 2Pb(NO 3 ) 2 (s) →\to _ 2PbO(s) + 4NO 2 (g) + O 2 (g)
  • C N 2 (g) + O 2 (g) →\to _ 2NO(g)
  • D Cl 2 (g) + 2OH −- _ (aq) →\to _ ClO −- _ (aq) + Cl −- _ (aq) + 4H 2 O(l)

Step-by-Step Verified Solution

Decomposition redox reaction leads to breakdown of a compound into two or more compounds at least one of which must be in the elemental state with change in oxidation number. 2 Pb ( N O 3 2 _ ) 2 ( s ) _ 2 PbO ( s ) + 4 N O 2 ( g ) + O 2 0 _ ( g )

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