MCQ
Which of the following is non-conducting ?
- A$CoCl_3\, .\, 6NH_3$
- B$CoCl_3\, .\, 5NH_3$
- C$CoCl_3\, .\, 4NH_3$
- ✓$CoCl_3\, .\, 3NH_3$
But other complex give atleast one ion so they are conductor.
$CoCl _3 .4 NH _3$ gives two ion (one complex $+$ one chloride).
$CoCl _3 .5 NH _3$ gives three ion (one complex $+$ two chloride).
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Assume $100 \%$ ionization for both $NaCl$ and $MgCl _2$
Given : $K _{ b }\left( H _2 O \right)=0.52\,K\,kg\,mol ^{-1}$
Molar mass of $NaCl$ and $MgCl _2$ is 58.5 and $95\,g$ $mol ^{-1}$ respectively.