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Chemistry Question on Redox reactions

Which of the following is an example of disproportionation redox reaction?

A

N2(g)+O2(g)⇢2NO(g)N_2(g) + O_2(g) ⇢ 2NO(g)

B

2H2(g)+O2(g)⇢2H2O(l)2H_2(g) + O_2(g) ⇢ 2H_2O(l)

C

2Pb(NO3)2(s)⇢2PbO(s)+4NO2(g)+O2(g)2Pb(NO_3)_2(s) ⇢ 2PbO(s) + 4NO_2(g) + O_2(g)

D

NaH(s)+H2O(l)⇢NaOH(aq)+H2(g)NaH(s) + H_2O(l) ⇢ NaOH(aq) + H_2(g)

E

2NO2(g)+2OH−⇢NO2−(aq)+NO3−(aq)+H2O(I)2NO_2(g) +2OH^{-} ⇢ NO_2^{-} (aq) +NO_3^{-} (aq) + H_2O(I)

Answer

2H2(g)+O2(g)⇢2H2O(l)2H_2(g) + O_2(g) ⇢ 2H_2O(l)

Explanation

Solution

The correct option is (B) : 2H2(g)+O2(g)⇢2H2O(l)2H_2(g) + O_2(g) ⇢ 2H_2O(l)