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VITEEE 2010 Paper

Question : 41 of 120

Marks: +1, -0

(III)

chloride is

Solution:

The correct formula of the given complex is tetraamine aqua chlorocobalt

(III)

chloride is

[\mathrm{CoCl}(\mathrm{H}_2\mathrm{O})(\mathrm{NH}_3)_4]\mathrm{Cl}_2,

because in it the oxidation number of Co is +3. While in rest other options O.No. of Co is +2

[\mathrm{CoCl}(\mathrm{H}_2\mathrm{O})(\mathrm{NH}_3)_4]\mathrm{Cl}_2

\Rightarrow x+(-1)+0+(0\times4)+(-1)2=0

\Rightarrow x-3=0\Rightarrow x=+3

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