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Which solution has the lower freezing po...

Which solution has the lower freezing point ? 10 g of methanol `( CH_3 OH_) ` in 100 g of water ( or ) 20 g of ethanol ` (CH_2 H_5OH) ` in 200 g of water

Text Solution

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`Delta T _(f) = K _(f), m.i.e. Delta T_(f) prop m`
`m_(CH_(3)-OH)= (((10)/(32)))/(0.1) = 3. 125m`
`m _(C_(2)H_(5)-OH)= (((20)/(46)))/(0.2)= 2. 174 m`
`therefore` Depression in freezing point is more in methanol solution and it will have lower freezing point.
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