1.

1.00 g of a non-electrolyte solute (molar mass 250g mol^(-1) was dissolved in 51.2 g of benzene. If the freezing point depression constant, K_(f) of benzene is 5.12 kh mol^(-1), the freezing point of benzene will be lowered by

Answer»

0.5 K
0.2 K
0.4 K
0.3 K

SOLUTION :`DELTA T_(f)=(K_(f)XX W_(B)xx1000)/(M_(B)xx W_(A))`
`Delta T_(f)=(5.12xx1.0xx1000)/(250xx51.2)`
`Delta T_(f)=0.4 K`


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