One mole of an ideal gas is placed in a constant volume vessel. The internal energy of the ideal gas is increased by 57 joules, and the temperature increases by 0.9 K. What can you say about CP* for this gas?
A. CP* = 63.3 J/mol•K, and this value is valid at any temperature.
B. CP* = 71.6 J/mol•K, and this value is valid at any temperature.
C. CP* = 55.0 J/mol•K, and this value is valid at any temperature.
D. CP* = 63.3 J/mol•K, but this value is valid only at the particular temperature examined in the experiment.
E. CP* = 71.6 J/mol•K, but this value is valid only at the particular temperature examined in the experiment.
A. Incorrect. Review the definitions of the two different heat capacities.
B. Incorrect. Nothing in this experiment indicates the heat capacity obtained is independent of temperature.
C. Incorrect. You are making an algebra mistake. Review your work.
D. Incorrect. Review the definitions of the two different heat capacities.
E. Correct. You must convert the heat capacity to constant-pressure by adding the gas constant. Additionally, nothing indicates temperature independence so we must assume it will vary with varying temperature.
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