Question 1 Temperature Consider the above phase diagram which shows two processes where a pure material is heated at constant pressure from its initial state "x" to its final state "y". (a) Sketch a graph showing the change in enthalpy, AH, versus temperature for the transition between the initial state "x" and the final state "y". Label the axes, the initial and final phases, and the phase transition. (b) Sketch a graph showing the change in enthalpy, AH, versus temperature for the transition between the initial state "u" and the final state "v". Label the axes, the initial and final phases, and the phase transition. (c) Which of the phase transitions identified in parts (a) and (b) will have the greatest enthalpy change? Explain your answer. Pressure

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Chapter1: Chemical Foundations
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Question 1
u
V
Temperature
Consider the above phase diagram which shows two processes where a pure material is
heated at constant pressure from its initial state "x" to its final state "y".
(a) Sketch a graph showing the change in enthalpy, AH, versus temperature for the
transition between the initial state “x” and the final state "y". Label the axes, the
initial and final phases, and the phase transition.
(b) Sketch a graph showing the change in enthalpy, AH, versus temperature for the
transition between the initial state “u” and the final state “v”. Label the axes, the
initial and final phases, and the phase transition.
(c) Which of the phase transitions identified in parts (a) and (b) will have the greatest
enthalpy change? Explain your answer.
Pressure
X
Transcribed Image Text:Question 1 u V Temperature Consider the above phase diagram which shows two processes where a pure material is heated at constant pressure from its initial state "x" to its final state "y". (a) Sketch a graph showing the change in enthalpy, AH, versus temperature for the transition between the initial state “x” and the final state "y". Label the axes, the initial and final phases, and the phase transition. (b) Sketch a graph showing the change in enthalpy, AH, versus temperature for the transition between the initial state “u” and the final state “v”. Label the axes, the initial and final phases, and the phase transition. (c) Which of the phase transitions identified in parts (a) and (b) will have the greatest enthalpy change? Explain your answer. Pressure X
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