Question

Formulation of Cobalt (III) Chloride-Ammonia Complexes
Colour	Formula	Solution conductivity corresponds to
Yellow	\[\ce{[Co(NH3)6]^{3+} 3Cl−}\]	Y
Purple	\[\ce{[CoCl(NH3)5]^{2+} 2Cl^-}\]	1 : 2 electrolyte
Green	X	1 : 1 electrolyte

‘X’ and ‘Y’ in the above table are:

Options

• X = \[\ce{[Co(NH3)6]^{2+} 3Cl−}\], Y = 1 : 3

• X = \[\ce{[Co(NH3)4Cl2]+Cl-}\], Y = 1 : 3

• X = \[\ce{[Co(NH3)4Cl2]+Cl−}\], Y = 1 : 1

• X = \[\ce{[Co(NH3)4Cl2]^{3+} 3Cl−}\], Y = 1 : 1

Answer 1

X = \[\ce{[Co(NH3)4Cl2]+Cl-}\], Y = 1 : 3