Analytical ChemistryHard
Question
CoCl2 + KNO2 + CH3COOH → [X] + H2O + KCl + CH3COOK + NO
(Unbalenced equation)
(Unbalenced equation)
Options
A.X is a yellow crystalline solid insoluble in water.
B.X is a green coloured compounds knwon as kinman′s green.
C.IUPAC name of X is potassium hexanitrito -N- cobaltate (II)
D.The compound X is an inner orbital complex.
Solution
Co2+ + 7NO2- + 3K+ + 2H+ → K3[Co(NO2)6] ↓ (yellow) + NO ↓ + H2O.
So [X] is K3[Co(NO2)]6. It is called Fischer′s reagent ; [Co(III)(NO2)6]3- has d2sp3 hybridisation and is diamagnetic. It′s IUPAC name is potassium hexanitrito - N - cobaltate(III).
So [X] is K3[Co(NO2)]6. It is called Fischer′s reagent ; [Co(III)(NO2)6]3- has d2sp3 hybridisation and is diamagnetic. It′s IUPAC name is potassium hexanitrito - N - cobaltate(III).
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