# Problem: In making a large vat of coffee, how much would the boiling point (in °C) of the water be raised by the addition of 0.2 grams of caffeine, (C8H10N4O2 a polar covalent molecule) to 5.0 L of water in making this much coffee? Ignore all the other ingredients of the coffee (except the water and the caffeine) and assume that the final amount of coffee make is 10.0 L. (Kb for water is 0.512 K kg mol-1). a. 0.0001 b. 0.05 c. 0.00005 d. 0.001 e. 0.0005

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In making a large vat of coffee, how much would the boiling point (in °C) of the water be raised by the addition of 0.2 grams of caffeine, (C8H10N4O2 a polar covalent molecule) to 5.0 L of water in making this much coffee? Ignore all the other ingredients of the coffee (except the water and the caffeine) and assume that the final amount of coffee make is 10.0 L. (Kb for water is 0.512 K kg mol-1).

a. 0.0001

b. 0.05

c. 0.00005

d. 0.001

e. 0.0005

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Boiling Point Elevation concept. If you need more Boiling Point Elevation practice, you can also practice Boiling Point Elevation practice problems.

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Based on our data, we think this problem is relevant for Professor Esfandiari's class at SJSU.