Using a phase diagram to predict phase at a given temperature and pressure.

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
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Using a phase diagram to predict phase at a given temperature and pressure.

Study the following phase diagram of Substance X.
36
solid
liquid
18
gas
100
200
temperature (K)
Use this diagram to answer the following questions.
Suppose a small sample of pure X is held at – 103. °C and 26.9 atm
What will be the state of the sample?
(choose one)
Suppose the temperature is held constant at – 103. °C but the
v (choose one)
pressure is decreased by 13 atm. What will happen to the sample?
Nothing.
It will melt.
Suppose, on the other hand, the pressure is held constant at 26.9 atm
It will freeze.
but the temperature is decreased by 25. °C. What will happen to the
It will boil.
sample?
It will condense.
It will sublime.
It will deposit.
pressure (atm)
Transcribed Image Text:Study the following phase diagram of Substance X. 36 solid liquid 18 gas 100 200 temperature (K) Use this diagram to answer the following questions. Suppose a small sample of pure X is held at – 103. °C and 26.9 atm What will be the state of the sample? (choose one) Suppose the temperature is held constant at – 103. °C but the v (choose one) pressure is decreased by 13 atm. What will happen to the sample? Nothing. It will melt. Suppose, on the other hand, the pressure is held constant at 26.9 atm It will freeze. but the temperature is decreased by 25. °C. What will happen to the It will boil. sample? It will condense. It will sublime. It will deposit. pressure (atm)
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