1.

The freezing point of 0.01 M KCl solution is -2^(@)C. If BaCl_(2) is completely ionized, what is the freezing point of 0.01 M BaCl_(2) solution ?

Answer»

`-3^(@)C`
`+3^(@)C`
`-2^(@)C`
`-4^(@)C`

SOLUTION :`Delta T_(F)=K_(f)xx m xx i`
`2=K_(f)xx0.01xx2`
`K_(f)=100^(@)C"kgmol"^(-1)`
`Delta T_(f)=K_(f)xx m xx i`
`=100xx0.01xx3`
`= 3^(@)C`
`T_(f)=-3^(@)C`


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