Redox Reactions And Electrochemistry Ques 657
Question: The oxidation state of nitrogen is correctly given for
Options:
A) Compound Oxidation state $ [ Co{{( NH_3 )}_5}Cl ]Cl_2 $ 0
B) Compound Oxidation state $ NH_2OH $ -2
C) Compound Oxidation state $ {{(N_2H_5)}_2}SO_4 $ +2
D) Compound Oxidation state $ Mg_3N_2 $ -3
Show Answer
Answer:
Correct Answer: D
Solution:
[d] $ {{[ \overset{+3}{\mathop{Co}},{{( N{{\overset{0}{\mathop{H}},}_3} )}_5}\overset{-1}{\mathop{Cl}}, ]}^{+2}}\overset{-1\times 2}{\mathop{Cl_2}}, $ $ +3+5x+15-1=+2 $ $ 5x+17=+2 $ $ 5x=-15 $ $ x=-3; $ Oxidation State of $ N=-3 $
[b] $ NH_2OH:x+3-2=0\Rightarrow x=-1 $ Oxidation state of $ N=-1 $
[c] $ {{(N_2H_5)}^{+1}}SO_4^{2-}: $ $ N_2H_5^{+}:2x+5=+1\Rightarrow x=-2 $ Oxidation number of $ N=-2 $
[d] $ Mg_3N_2:2\times 3+2x=0 $ $ 2x=-6 $ $ x=-3 $ Oxidation state of $ N=-3 $
