JEE Main | 2018Redox and Equivalent ConceptEasy

Question

The oxidation states of
Cr in [Cr(H2O)6]Cl3,[Cr(C6H6)2] and K2[Cr(CN)2(O)2(O2)(NH3)] respectively are :

Options

A.

+3, +2, and +4

B.

+3, 0, and +6

C.

+3, 0, and +4

D.

+3, +4, and +6

Solution

(i)  [Cr(H2O)6]Cl3:Hexaaquachromium(III) chloride
x + 6 × 0 + (-1) × 3 = 0
x=+3
(ii) [Cr(C6H6)2] : bis(h6 - benzene)chromium(0)
y + 2 × 0 = 0
y=0
(iii) K2[Cr(CN)2(O)2(O2) (NH3)] :
Potassium amminedicyanidodioxidoperoxidochromate(VI)
2 × 1 + z + 2 × (-1) + 2 × (-2) + (-2) + 0 = 0
z=+6
The oxidation states of Cr in [Cr(H2O)6]Cl3, [Cr(C6H6)2], and K2[Cr(CN)2(O)2(O2) (NH3)]
respectively are +3, 0 and +6.

Create a free account to view solution

View Solution Free
Topic: Redox and Equivalent Concept·Practice all Redox and Equivalent Concept questions

More Redox and Equivalent Concept Questions

The number of moles of KMnO4 that will be needed to react with one mole of sulphite ion in acidic solution is :...In which of the following compounds, nitrogen exhibits highest oxidation state?...The specific heat of a metal is 0.26. The chloride of the metal (always monomer) has its molecular mass 95. The volume o...The equivalent weight of ozone behaving as an oxidizing agent is...Specific heat of a solid element is 0.1 and its equivalent weight is 31.8 its exact atomic weight is :-...