A) \[AsO_{4}^{2-}+MnO_{4}^{-}\xrightarrow{{}}AsO_{4}^{3-}+Mn{{O}_{2}}+2{{H}_{2}}O\]
B) \[MnO_{4}^{-}+{{C}_{2}}O_{4}^{2-}\xrightarrow{{}}M{{n}^{2+}}+C{{O}_{2}}\]
C) \[Cu+4HN{{O}_{3}}\xrightarrow{{}}Cu{{(N{{O}_{3}})}_{2}}+2N{{O}_{2}}+2{{H}_{2}}O\]
D) \[{{H}_{2}}S+HN{{O}_{3}}\to {{H}_{2}}O+NO+S\]
Correct Answer: C
Solution :
The balanced chemical equation is: \[Cu+4HN{{O}_{3}}\xrightarrow{{}}Cu{{(N{{O}_{3}})}_{2}}+2N{{O}_{2}}\]\[+2{{H}_{2}}O\]
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