Question

A solution consisting of 0.228 mol of methylbenzene, C6H5CH3, in 255 g of nitrobenzene, C6H5NO2, freezes at -0.3ºC. Pure nitrobenzene freezes at 6.0ºC. What is the freezing-point depression constant of nitrobenzene?
A) 1.1ºC/m
B) 27ºC/m
C) 14.0ºC/m
D) 3.5ºC/m
E) 7.0ºC/m

Answer

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