When 2.41 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 8.07 °C. Look up the freezing point and K, constant for camphor in the Colligative Constants table. Calculate the molar mass of vitamin K. molar mass: g/mol
When 2.41 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 8.07 °C. Look up the freezing point and K, constant for camphor in the Colligative Constants table. Calculate the molar mass of vitamin K. molar mass: g/mol
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Transcribed Image Text:When 2.41 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 8.07 °C. Look up
the freezing point and Kf constant for camphor in the Colligative Constants table.
Calculate the molar mass of vitamin K.
molar mass:
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Expert Solution
Step 1
Given depression in freezing point=8.07°C
Kf(camphor) =37.8°C/m
∆Tf=iKfm
8.07°C=1 x 37.8°C/m x m
m = 0.2134m
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