C. 2)If you were to have a bottle containing compound X in your closet, what phase would it most likely be in? Worksheet – Phase Diagrams 1. 7) What are the values for temperature and pressure at STP? pressure. 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. 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. The graph was drawn from data collected as a substance was heated at a constant rate. What state(s) would the substance be in at each of points 2 to 5? Suppose at a much lower pressure, the substance was under the conditions at point 6. _____ 10) What is the phase (s, l, g) of a substance at 1.5 atm and 50 °C? Use this diagram for questions (1) – (9) (1) Label each region of the graph as solid, liquid, or gas. Name, and explain the significance of, the point C. Curve 1 can be thought of as showing the effect of pressure on melting point. 1)What is the critical temperature of compound X? temperature. (2) Label the triple point, normal melting point, and normal boiling point on the graph and estimate their values in the spaces below. 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 phase diagram for bromine is shown below. 3. (Write the names of these phases in the appropriate regions directly on the diagram.) We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 15. Legal. 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. Liquid water has the highest specific heat of all liquids except for NH3(True, False) True 2. You should try to answer the questions without accessing the Internet. Part A – Generic Phase Diagram. 0. and . The phase diagram for bromine is shown below. 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”. Describe what happens to the substance as you increase the temperature from point 6 to point 8. and . What letter represents the triple point? If you think about the three lines which meet at that point, they represent the point that liquid, solid and gas coexist. phase diagram. pressure. Unless otherwise noted, LibreTexts content is licensed by CC BY-NC-SA 3.0. Pure Phases and their Transitions (Worksheet), [ "article:topic", "Phase transition", "authorname:clarkj" ], Former Head of Chemistry and Head of Science. 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. The temperature and pressure corresponding to this are known as the critical temperature and critical pressure. A phase diagram is a type of chart used to show conditions (pressure, temperature, volume, etc.) 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. On Crosbia, bolonium (Bg) and manasium (Ma) react together to form the compound tastegudum. Phase Change Worksheet. 2. Work in groups on these problems. _____ 9) What is the phase (s, l, … Give the state(s) at each of the points 1 to 3. Mark on the diagram the areas corresponding to ice, liquid water, and water vapor. In your own words, what is the definition of a triple point? c. Suppose the constant pressure was 1 atmosphere. ~770. Draw a small red circle around the point that is the critical point for tastegudum.