JEE Main 2022 · 30 Jul · Shift 2 · Chemistry Q50

ChemistrySingle correct+4 / -1Question 50 of 90

In the ring test of NO $_3^-$ ion what is the oxidation number of iron in the complex (brown ring) [Fe(H $_2$ O) $_5$ NO]SO $_4$ ?

Answer and worked solution

Official answer: B

Brown ring. NO is bound as NO⁺, so with five neutral waters and the complex cation of charge +2, iron is +1.

(B)

Topics:Anion analysis Nomenclature

JEE Main 2022 · 30 Jul · Shift 2, Chemistry question 50