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What will the final temperature be if you add 400 KJ of heat to 1.00 L of liquid water at 20°C? The density of water is 1.00 %/mL at this temperature. The specific heats of liquid and gaseous water are 4.18 and 1.84 J/g.K, and the enthalpy of vaporization is 40.67 KJ/mol. A. 136.4°C OB. 100°C C. 115.7°C D. 95.7°C E. 20.1°C

What will the final temperature be if you add 400 KJ of heat to 1.00 L of liquid water at 20°C? The density of water is 1.00 %/mL at this temperature. The specific heats of liquid and gaseous water are 4.18 and 1.84 J/g.K, and the enthalpy of vaporization is 40.67 KJ/mol. A. 136.4°C OB. 100°C C. 115.7°C D. 95.7°C E. 20.1°C

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 5.24QE
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What will the final temperature be if you add 400 KJ of heat to 1.00 L of liquid water at 20°C? The density of water is 1.00 %/mL at this temperature. The specific heats of liquid and gaseous water are 4.18 and 1.84 J/g.K, and the enthalpy of vaporization is 40.67 KJ/mol. A. 136.4°C B. 100°C C. 115.7°C D. 95.7°C E. 20.1°C That's incorrect. If 400 KJ of heat is added to 1.00 L of water, we would expect the temperature to rise by 95.7°C in the absence of any phase transitions. Since we started at 20°C, you might think the final temperature will be 115.7°C, but you've failed to account for the fact that water will start to boil once the temperature reaches 100°C
Transcribed Image Text:What will the final temperature be if you add 400 KJ of heat to 1.00 L of liquid water at 20°C? The density of water is 1.00 %/mL at this temperature. The specific heats of liquid and gaseous water are 4.18 and 1.84 J/g.K, and the enthalpy of vaporization is 40.67 KJ/mol. A. 136.4°C B. 100°C C. 115.7°C D. 95.7°C E. 20.1°C That's incorrect. If 400 KJ of heat is added to 1.00 L of water, we would expect the temperature to rise by 95.7°C in the absence of any phase transitions. Since we started at 20°C, you might think the final temperature will be 115.7°C, but you've failed to account for the fact that water will start to boil once the temperature reaches 100°C
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