A) \[FeS{{O}_{4}}NO\]
B) \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}\]
C) \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{+}}\]
D) \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{3}}\]
E) \[Fe{{({{H}_{2}}O)}_{4}}{{(NO)}_{2}}]\]
Correct Answer: B
Solution :
In the ring test a dark brown ring of\[Fe{{({{H}_{2}}O)}_{5}}NO{{]}^{2+}}SO_{4}^{2-}\]complex formed at the interface between two liquids. \[2NaN{{O}_{3}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}2NaHS{{O}_{4}}\] \[+2HN{{O}_{3}}\] \[2HN{{O}_{3}}+6FeS{{O}_{4}}+3{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}\] \[3F{{e}_{2}}{{(S{{O}_{4}})}_{3}}+2NO+4{{H}_{2}}O\] \[[Fe{{({{H}_{2}}O)}_{6}}]S{{O}_{4}}+NO\xrightarrow{{}}\] \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}SO_{4}^{2-}+{{H}_{2}}O\]
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