Which of the following combines with Fe(II) i | vedclass

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(B) The brown ring test is used to detect the presence of nitrate ions $(NO_3^-)$ in a solution.When a freshly prepared ferrous sulfate solution is ad

Vedclass · Accepted Answer

$NO$

Vedclass · Answer

(B) The brown ring test is used to detect the presence of nitrate ions $(NO_3^-)$ in a solution.When a freshly prepared ferrous sulfate solution is added to the nitrate solution followed by the careful addition of concentrated sulfuric acid along the sides of the test tube,a brown ring is formed at the junction of the two layers.The reaction involves the reduction of nitrate to nitric oxide $(NO)$,which then reacts with the $Fe(II)$ ions to form the brown complex $[Fe(H_2O)_5(NO)]SO_4$.

Which of the following combines with $Fe(II)$ ions to form a brown complex?

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