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For 1 molal aqueous solution of the following compounds, which one will show the highest freezing point ?
(1) [Co(H2O)5Cl]Cl2.H2O
(2) [Co(H2O)4Cl2]Cl.2H2O
(3) [Co(H2O)3Cl3].3H2O
(4) [Co(H2O)6]Cl3

Please explain how to find i for all four and the concept 

Asked by nipunverma59 9th January 2019, 11:35 PM
Answered by Expert
Answer:
We know vant hoff factor, i is directly proportional to depression in freezing point (ΔTf) which is dependent on the number of ions formed in aqueous medium. Here all salts are assumed to be 100% dissociated so their α (degree of dissociation) = 1.
 
4th salt is supposed to have highest freezing point.
 
Refer Image for details.
qsnImg
Answered by Expert 10th January 2019, 2:39 AM
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