Describe what happens to the substance as you increase the temperature from point 6 to point 8. Have questions or comments? Directions: Refer to the phase diagram below when answering the following questions. The molecular viscosity of water is less than most liquids at comparable temperatures (True, False) True 3. temperature. is a graphical way to depict the effects of . There are usually two major distortions. Bromine sublimes when the temperature is –25 0C and the pressure is 101.3 kPa. What physical state would the substance be in under the conditions at point 1? If you look at Figure \(\PageIndex{1}\), you will see that there are three lines, three areas marked "solid", "liquid" and "vapour", and two special points marked "C" and "T". phase diagram. 5. Work in groups on these problems. Use this diagram for questions (1) – (9) (1) Label each region of the graph as solid, liquid, or gas. What section represents the liquid phase? Name, and explain the significance of, the point labeled T on these diagrams? Phase Diagram Worksheet Name: _____ A . Explain what curve 1 represents, and why it slopes backwards unlike the corresponding curve 1 in the last diagram. Part A – Generic Phase Diagram. Give the state(s) at each of the points 4 to 8. Legal. The phase diagram of an alloy made of components A and B, for all combinations of Tand X If the temperature was then increased at constant pressure, what state(s) would the substance be in at points 10, and 11? and . Part C – Phase Diagram for Carbon Dioxide. You should try to answer the questions without accessing the Internet. In your own words, what is the definition of a triple point? Suppose the temperature was then increased on this substance at constant pressure. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 0. c. Suppose the constant pressure was 1 atmosphere. Worksheet – Phase Diagrams 1. Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. (Write the names of these phases in the appropriate regions directly on the diagram.) C. 2)If you were to have a bottle containing compound X in your closet, what phase would it most likely be in? Part D – Phase Diagram for Tastegudum. on the phase of a substance: The CURVES indicate the conditions of temperature and pressure under which “equilibrium” between different phases of a substance can exist. Pure Phases and their Transitions (Worksheet), [ "article:topic", "Phase transition", "authorname:clarkj" ], Former Head of Chemistry and Head of Science. For each of the questions on this worksheet, refer to the phase diagram for mysterious compound X. 3. What would be the state of the substance at point 9? Phase Change Worksheet. Common components of a phase diagram are lines of equilibrium or phase boundaries, which refer to lines that mark conditions under which multiple phases can coexist at equilibrium. 7) What are the values for temperature and pressure at STP? Phase transitions occur along lines of equilibrium. Draw a small blue circle around the point that is the triple point for tastegudum. Directions: Refer to the phase diagram below when answering the following questions. 1)What is the critical temperature of compound X? A phase diagram is a type of chart used to show conditions (pressure, temperature, volume, etc.) at which thermodynamically distinct phases occur and coexist at equilibrium (at topic later on in the course). Use this diagram … Answer the questions below in relation to the following generic phase diagram. ~770. 4. _____ 10) What is the phase (s, l, g) of a substance at 1.5 atm and 50 °C? Which section represents the solid phase? Phase Diagram Worksheet Answers Refer to the phase diagram below when answering the questions on this worksheet: 1) Label the following on the phase diagram above: Solid phase, liquid phase, gas phase, triple point, critical point. 2. at which thermodynamically distinct phases occur and coexist at equilibrium (at topic later on in the course). on the phase of a substance: The CURVES indicate the conditions of temperature and pressure under which “equilibrium” between different phases of a substance can exist. _____ 9) What is the phase (s, l, g) of a substance at 0.75 atm and 100 °C? What section represents the gas phase? temperature. The temperature and pressure corresponding to this are known as the critical temperature and critical pressure. Use the graph to answer the following questions. phase diagram. The LibreTexts libraries are Powered by MindTouch® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. The graph was drawn from data collected as a substance was heated at a constant rate. The phase diagram for bromine is shown below. Missed the LibreFest? BOTH phases exist on these lines: T= _____, P= _____ 8) What is the phase (s, l, g) of a substance at 2.0 atm and 100 °C? On Crosbia, bolonium (Bg) and manasium (Ma) react together to form the compound tastegudum. 2) What is the normal melting point of this substance? The "C" point is known as the critical point. 14. What letter represents the triple point? Mark on the diagram the areas corresponding to ice, liquid water, and water vapor. and . Phase Diagram Worksheet. PHASE DIAGRAM WORKSHEET #2 Name_____ Period_____ Date_____ At standard temperature and pressure, bromine (Br 2) is a red liquid. pressure. PHASE DIAGRAM WORKSHEET . Use the diagram above to explain how that term arises. Phase Diagram Worksheet Answers Refer to the phase diagram below when answering the questions on this worksheet: 1) Label the following on the phase diagram above: Solid phase, liquid phase, gas phase, triple point, critical point. For the following two questions consider the two lines on the phase diagram below: This is the phase diagram for carbon dioxide with some values marked on it: Solid carbon dioxide is commonly known as “dry ice”. pressure. What state(s) would the substance be in at each of points 2 to 5? If you think about the three lines which meet at that point, they represent the point that liquid, solid and gas coexist. Phase Diagram Worksheet Name: A phase diagram is a graphical way to depict the effects of pressure and temperature on the phase of a substance: The CURVES indicate the conditions of temperature and pressure under which "equilibrium" between different phases of a substance can exist. 2) What is the normal melting point of this substance? Point T on the diagram is called the triple point. 1. Material in this phase has _____ volume and _____ shape. At 1 atmosphere and room temperature (25 C), would you expect solid carbon dioxide to melt to the liquid phase, or sublime to the gas phase? The carbon dioxide … The molecular viscosity of water is less than most liquids at comparable temperatures (True, False) True 3. Draw a small red circle around the point that is the critical point for tastegudum. Figure 1: A typical phase diagram. Some industrial process require carbon dioxide. Label the regions of the diagram that correspond to the solid, liquid, and vapor phases. Curve 2 can be thought of as showing the effect of pressure on boiling point. The phase diagram for bromine is shown below. These diagrams (including this one) are nearly always drawn highly distorted in order to see what is going on more easily. Explain why most solids have a very steep curve, sloping slightly forwards as pressure increases. For more information contact us at info@libretexts.org or check out our status page at https://status.libretexts.org. Give the state(s) at each of the points 1 to 3. Water has the highest value of latent heat of evaporation of all substances (True, False) True 4. Liquid water has the highest specific heat of all liquids except for NH3 (True, False) True 2. T= _____, P= _____ 8) What is the phase (s, l, g) of a substance at 2.0 atm and 100 °C? 7) What are the values for temperature and pressure at STP? Explain why boiling point increases with pressure (this is a little hard at this stage, but give it a try). 15. Figure \(\PageIndex{1}\): A typical phase diagram. A phase diagram(or equilibrium diagram) is a diagram with Tand composition as axes, showing the equilibrium constitution. Liquid water has the highest specific heat of all liquids except for NH3(True, False) True 2. _____ 9) What is the phase (s, l, … We'll discuss these when they become relevant. Watch the recordings here on Youtube! A phase diagram is a type of chart used to show conditions (pressure, temperature, volume, etc.) EAS 6140 Thermodynamics of Atmospheres and Oceans Worksheet – Phase Diagrams 1. (2) Label the triple point, normal melting point, and normal boiling point on the graph and estimate their values in the spaces below. Name, and explain the significance of, the point C. Curve 1 can be thought of as showing the effect of pressure on melting point.

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