3B.8 What is the change in entropy when (a) 100 g of ice is melted at 0 °C, (b) 100 g of water is heated from 0 °C to 100 °C, and (c) 100 g of water is vaporized at 100 °C? Use the values for each step to calculate the change in entropy when 100 g of ice is converted into water vapour at 100 °C. Suppose that the changes are brought about by a heater that supplies energy at a constant rate. Sketch a graph showing (a) the change in temperature of the system, (b) the enthalpy of the system, (c) the entropy of the system as a function of time.

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3B.8 What is the change in entropy when (a) 100 g of ice
is melted at 0 °C, (b) 100 g of water is heated from 0 °C to
100 °C, and (c) 100 g of water is vaporized at 100 °C? Use
the values for each step to calculate the change in entropy
when 100 g of ice is converted into water vapour at 100 °C.
Suppose that the changes are brought about by a heater that
supplies energy at a constant rate. Sketch a graph showing
(a) the change in temperature of the system, (b) the enthalpy
of the system, (c) the entropy of the system as a function
of time.
Transcribed Image Text:3B.8 What is the change in entropy when (a) 100 g of ice is melted at 0 °C, (b) 100 g of water is heated from 0 °C to 100 °C, and (c) 100 g of water is vaporized at 100 °C? Use the values for each step to calculate the change in entropy when 100 g of ice is converted into water vapour at 100 °C. Suppose that the changes are brought about by a heater that supplies energy at a constant rate. Sketch a graph showing (a) the change in temperature of the system, (b) the enthalpy of the system, (c) the entropy of the system as a function of time.
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