When 50 g of ethanol is heated from T1 below its freezing point to a temperature T2 above its freezing point, it absorbs 523 kJ of heat. If the same sample is cooled back from T2 until it freezes and is cooled back to T1, which of the following is true?
When 50 g of ethanol is heated from T1 below its freezing point to a temperature T2 above its freezing point, it absorbs 523 kJ of heat. If the same sample is cooled back from T2 until it freezes and is cooled back to T1, which of the following is true?
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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When 50 g of ethanol is heated from T1 below its freezing point to a temperature T2 above its freezing point, it absorbs 523 kJ of heat. If the same sample is cooled back from T2 until it freezes and is cooled back to T1, which of the following is true?
a. The sample releases more than 523 kJ of heat to its surroundings.
b. The sample releases less than 523 kJ of heat to its surroundings.
c. The sample releases 523 kJ to its surroundings.
d. It is impossible to know without the heat of fusion of ethanol.
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