1.

The freezing point of one molal NaCl solution assuming NaCl to be 100% dissociated in water is (molal depression constant = 1.86)

Answer»

`-1.86^(@)C`
`-3.72^(@)C`
`+1.86^(@)C`
`+3.72^(@)C`

SOLUTION :For NaCli=2
`DELTA T_(F)=2K_(f)m=2xx1.86xx1=3.72`
`T_(s)=T-Delta T_(f)=0-3.72=-3.72^(@)C`


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