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The Addition of 125 Mg of Caffeine to 100 G

Question 88

Multiple Choice

The addition of 125 mg of caffeine to 100 g of cyclohexane lowered the freezing point by 0.13 K .Calculate the molar mass of caffeine.The kf for cyclohexane is 20.1 K.kg.mol-1.


A) 47.8 g.mol-1
B) 481 g.mol-1
C) 96.5 g.mol-1
D) 19.3 g.mol-1
E) 193 g.mol-1

Correct Answer:

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