2(a) A sample of water (20 g) at 60°C is placed in a freezer that is held at a constant temlp of -15°C. Considering the water as the "system," answer the following questions: (i) After 10 hours, the sign of qsys is negative, explain why gsys is negative. (ii) What will be the state of the water after 10 hours? How will the initial enthalpy for the water compare with the final enthalpy of the water after it has spent 10 hours in the freezer? (iii) (iv) What will the temperature of the water be after 10 hours in the freezer? (y) What is the change in temperature of the system after 10 hours?
2(a) A sample of water (20 g) at 60°C is placed in a freezer that is held at a constant temlp of -15°C. Considering the water as the "system," answer the following questions: (i) After 10 hours, the sign of qsys is negative, explain why gsys is negative. (ii) What will be the state of the water after 10 hours? How will the initial enthalpy for the water compare with the final enthalpy of the water after it has spent 10 hours in the freezer? (iii) (iv) What will the temperature of the water be after 10 hours in the freezer? (y) What is the change in temperature of the system after 10 hours?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:2(a)
A sample of water (20 g) at 60°C is placed in a freezer that is held at a constant temperature
of -15°C. Considering the water as the "system," answer the following questions:
(i)
After 10 hours, the sign of qsys is negative, explain why asys is negative.
(ii)
What will be the state of the water after 10 hours?
How will the initial enthalpy for the water compare with the final enthalpy of the
water after it has spent 10 hours in the freezer?
(iii)
(iv)
What will the temperature of the water be after 10 hours in the freezer?
(v)
What is the change in temperature of the system after 10 hours?
(vi)
The specific heat of water is 4.2 J/kg.°C, calculate the value of qsys.
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