A) \[N{{O}_{2}}\xrightarrow[{}]{}NO_{2}^{-}\]
B) \[NO_{3}^{-}\xrightarrow[{}]{}NO\]
C) \[NO_{3}^{-}\xrightarrow{{}}NO_{4}^{+}\]
D) \[NO_{4}^{+}\xrightarrow{{}}{{N}_{2}}\]
Correct Answer: D
Solution :
\[\overset{+\,4}{\mathop{N{{O}_{2}}}}\,\xrightarrow{{}}\overset{+3}{\mathop{N}}\,O_{2}^{-}\] \[\overset{+5}{\mathop{NO_{3}^{-}}}\,\xrightarrow{{}}\overset{+2}{\mathop{N}}\,O\] \[\overset{+5}{\mathop{NO_{3}^{-}}}\,\xrightarrow{{}}\overset{-3}{\mathop{N}}\,H_{4}^{+}\] \[\overset{-3}{\mathop{NO_{4}^{+}}}\,\xrightarrow{{}}{{\overset{0}{\mathop{N}}\,}_{2}}\]
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