Lesson 34



Name:ETP Section:t3 Start Time:19:44:49 Instructor:pattersonet Course:421



1. The Clausius-Clapeyron equation (which, by the way, should really be called the "Clapeyron-Clausius equation" -- ask me why in class if you are interested!) is given by:


Both sides of this equation are easily determined experimentally. How do you think you would you actually go about determining each side experimentally? Try to explain what you would measure, and how you would measure it.

Enter your answer here:



2. Given that water boils at 100 degrees C under atmospheric pressure, if you want water to boil at 120 degrees C, approximately what pressure would be required? (The latent heat of vaporization for water is 540 cal/g, or 4.07 x 104 J/mole. Also, the gas constant R is 8.314 J/mole K.) Please explain your steps.

Enter your answer here:



3. Suppose you have a sealed container in which there is water and steam together. The container is held at constant temperature. As time goes on, the steam is condensing into water. Which of the following statements is true?

Check the correct answer:
a) At the container's temperature and pressure, mwater < msteam.
b) At the container's temperature and pressure, mwater = msteam.
c) At the container's temperature and pressure, mwater > msteam.
d) Not enough information is provided to determine the answer.

Below is a space for your thoughts, including general comments about today's assignment (what seemed impossible, what reading didn't make sense, what we should spend class time on, what was "cool", etc.):


You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT button.

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