A liquid has a constant heat capacity of CP = 3 kJ/kg•K. Initially, a vessel contains 0.25 kg of this liquid at 300 K. If the enthalpy of the liquid is increased by 5 kJ, what is the final temperature of the liquid? Assume the process occurs at constant pressure.
A. 6.7 K
B. 300.01 K
C. 293.3 K
D. 299.99 K
E. 306.7 K
A. Incorrect. Reread the problem statement; this is the temperature change in the liquid, not the final temperature.
B. Incorrect. Check your units; you are off by several orders of magnitude in one of your calculations.
C. Incorrect. Check the problem statement carefully and redo the calculations.
D. Incorrect. You are making at least one units mistake and at least one sign error.
E. Correct. The temperature increases slightly for this increase in enthalpy.
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