The phase diagram for the pure substance X is shown at right. The temperature of a sample of pure solid X is slowly raised from 10°C to 100°C at a constant pressure of 0.5 atm. 1.5 What is the expected behavior of the substance? 1.0 А. It first melts to a liquid and then boils at about 70°C. В. It first melts to a liquid and then boils at about 30°C. 0.5 It melts to a liquid at a temperature of about 20°C and remains a liquid until the temperature is greater than 100°C. С. 0 20 40 60 80 100 D. It sublimes to vapor at an equilibrium temperature of about 20° C. Temperature (°C) Pressure (atm)

The phase diagram for the pure substance X is shown at right. The temperature of a sample of pure solid X is slowly raised from 10°C to 100°C at a constant pressure of 0.5 atm. 1.5 What is the expected behavior of the substance? 1.0 А. It first melts to a liquid and then boils at about 70°C. В. It first melts to a liquid and then boils at about 30°C. 0.5 It melts to a liquid at a temperature of about 20°C and remains a liquid until the temperature is greater than 100°C. С. 0 20 40 60 80 100 D. It sublimes to vapor at an equilibrium temperature of about 20° C. Temperature (°C) Pressure (atm)

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

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Below is the phase diagram for bismuth. Select the statement that is true. a. The "bcc" phase (phase VI) is less dense than liquid bismuth. b. The rhombohedral phase (phase I) is less dense than the liquid phase c. Phase II is less dense than the rhombohedral phase (phase I). d. Phase IX is less dense than phase VIII.
7. The vapor pressure of isooctane is 75.0 torr at 34.0 °C. What is the normal boiling point Given: Heat of vaporization of isooctane = 33.8 kJ/mol
A chemist determined vapor pressures of an unknown substance at different temperatures. The data was plotted as ln(P) vs 1/T (temperature in Kelvin). What is △H∘vap of this substance in kJ/mol?
Need answers for the blue parts,thank you!!
Name: Period: Date: Unit 14: Thermodynamics Part 1: Phase Diagrams Below is a Phase Diagram for WATER. Critical point 225 atm 1 atm Water (liquid) Ice Pressure (solid) Water vapor (gas) 0.006 atm Triple point 0.01° C 100° C 3740 C Temperature Drawing is not to scale 1. The point where all three phases of matter exist is called the 2. The triple point for water is at and 3. The temperature above which a substance cannot be a liquid is called the 4. The critical point for water is at and 5. Normal freezing and boiling points always occur at atm. 6. Water's freezing point is and its boiling point is 7. What is the state of water at 200°C and 200 atm? 8. Beginning at 1 atm and 1.0°C, what phase change occurs when the pressure drops to 0.004 atm? 9. What phase change occurs if steam at 300°C and 1.5 atm cools to 50°C at constant pressure? 10. What phase change occurs if water at 50°C and 1.5 atm is placed in a vacuum at a pressure of 0.002 atm?
d• Using the phase diagram to the right, select all of the statements that are false. f Te Temperature (not to scale) Point G is the Critical Point. The substance is a supercritical fluid at Point F Decreasing the pressure of the substance at constant Temperature from point A, will result in vaporization Cooling the substance at Point F will induce condensation There is an equilibrium in the gaseous and liquid states at Point E. Increasing the temperature at constant pressure from Point A will results in two phase changes in the substance. Pressure (not to scale)
Labelling a typical simple phase diagram.
Use the observation in the first column to answer the question in the second column. ft C W rosoft icrosoft 52.210... esc observation At 1 atm pressure, Substance C boils at 88. °C and Substance D boils at 65. °C. The enthalpy of vaporization of Substance E is bigger than that of Substance F. At 63 °C, Substance A has a vapor pressure of 84. torr and Substance B has a vapor pressure of 104. torr. Explanation ! 1 280 Which has a higher enthalpy of vaporization? Substance C Substance D Neither, C and D have the same enthalpy of vaporization. It's impossible to know without more information. At any temperature where both substances are liquid, which has the higher vapor pressure? O Substance E Substance F Neither, E and F have the same vapor pressure. It's impossible to know without more information. Which has a higher boiling point? Substance A Substance B Neither, A and B have the same boiling point. It's impossible to know without more information. Q # 3 17 DEC C 10 question $ 4 H % 5…
O ADVANCED MATERIAL Using a phase diagram to predict phase at a given temperature... Study t. lowing phase diagram of Substance X. 0.4 solid liquid 0.2 gas 0. 200 400 temperature (K) Use this diagram to answer the following questions. Suppose a small sample of pure X is held at 166. °C and 0.2 atm. What will be the state of the sample? (choose one) 8 Suppose the temperature is held constant at 166. °C but the pressure is decreased by 0.1 atm. what will happen to the sample? (choose one) Suppose, on the other hand, the pressure is held constant at 0.2 atm but the temperature is decreased by 144. °C. What will happen to the v (choose one) sample? Nothing. It will melt. It will freeze. Explanation Check It will boil. It will condense. 20 80 F2 F3 F4 F5 pressure (atm) II
3. What is the normal melting point of the substance?4. What phase(2) will exist at 1 atm and 70 degree Celcius?
Below is the phase diagram for iodine. If you start with a sample of iodine at 150°C and 1.0 atm and you increase the temperature, what phase change will you observe? a. boiling b. melting c. sublimation d. melting, then boiling