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An octahedral complex is prepared by mix...

An octahedral complex is prepared by mixing CoCl3 and NH3 in the molar ratio 1 : 4, 0.1 m solution of this complex was found to freeze at 0.372°C. What is the formula of the complex? Given that molal depression constant (Kf) for water = 1.86°C/m.

Text Solution

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The correct Answer is:
12
`DeltaT_(f)=imk_(f)`
`0.372=1.86xx0.1xxi`
`i=2`
Complex is `[Co(NH_(3))_(4)Cl_(2)]Cl` octahedral with two geometrical isomers.
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