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The freezing point of a solution containing 50cm^(3) of ethylene glycol in 50 g water is found to be -34^(@)C. Assuming ideal behaviour, calculate the density of ethylene glycol, (K_(f)" for water "="1.86 K kg mol"^(-1)) |
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Answer» SOLUTION :`w_(2)=(M_(2)xxDeltaT_(F)xxw_(1))/(1000xxK_(f))=("62 g MOL"^(-1)xx34Kxx50g)/("1000 g kg"^(-1)xx"1.86 K kg mol"^(-1))="56.67 g"` `d=(w_(2))/(V)=("56.67 g")/("50 cm"^(3))="1.13 g cm"^(-3)` |
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