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Question

Chemistry Question on Redox reactions

Equivalent weight of NH3 {NH_3} in the change, N2−>NH3 {N_2 -> NH_3} is

A

17/6

B

17

C

17/2

D

17/3

Answer

17/3

Explanation

Solution

{\overset{\text{0}}{ {N }}2−>2_2 -> 2\overset{\text{-3}}{ { NH}}_3} To balance charge add 6 e−e^- to L.H.S., we have, N2+6e−−>2NH3 {N_2 + 6e^{-} -> 2 NH_3} or 12N2+3e−−>NH3 {\frac{1}{2} N_2 + 3e^{-} -> NH_3} Mol. wt = 17 Thus, the e wt. of NH3=17/3 {NH_3 = 17/3}