Figure I shows the phase diagram ofCO.. 73.7 679 5.2 1.0 -78.5 °C -56.4 °C 25.0°C 31.1 °C Temperature (°C) Figure 1: Phase Diagram of CO2 (i) By referring to the phase diagram shown in Figure 1 above, explain why liquid CO, does not exist at standard ambient temperature and pressure (SATP). What is the physical state of CO2 at SATP? (ii) A CO2 fire extinguisher is located outside of a building in Manchester, England. During the winter time, one can hear a sloshing sound when the extinguisher is gently shaken. However, there will be no sound in the summer time when it is shaken. By referring to the information given in Figure 1, explain this observation by assuming that the fire extinguisher has never been used before and no leaking (reg) amssad

Figure I shows the phase diagram ofCO.. 73.7 679 5.2 1.0 -78.5 °C -56.4 °C 25.0°C 31.1 °C Temperature (°C) Figure 1: Phase Diagram of CO2 (i) By referring to the phase diagram shown in Figure 1 above, explain why liquid CO, does not exist at standard ambient temperature and pressure (SATP). What is the physical state of CO2 at SATP? (ii) A CO2 fire extinguisher is located outside of a building in Manchester, England. During the winter time, one can hear a sloshing sound when the extinguisher is gently shaken. However, there will be no sound in the summer time when it is shaken. By referring to the information given in Figure 1, explain this observation by assuming that the fire extinguisher has never been used before and no leaking (reg) amssad

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...

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Study the following phase diagram of Substance X. 24 solid liquid gas 100 200 300 temperature (K) Use this diagram to answer the following questions. Suppose a small sample of pure X is held at -221. °C and 15.6 atm. (choose one) v What will the state of the sample? Suppose the temperature is held constant at -221. °C but the (choose one pressure is decreased by 7 atm. What will happen to the sample? (choose one) Nothing. It will melt. It will freeze. It will boil. It will condense. It will sublime. It will deposit. Suppose, on the other hand, the pressure is held constant at 15.6 atm but the temperature is increased by 160. °C. What will happen to the sample? pressure (atm)
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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
Need answers for the blue parts,thank you!!
1. Freon-12 (CCl2F2) is banned as a refrigerant because it is harmful to the ozone. a. Sketch the phase diagram of CCl2F2 using the physical constants below Normal boiling point = -29.8 °C Normal melting point = -158 °C Critical temperature = 112 °C Critical pressure = 40.8 atm Triple point (2.42 ×10-6 atm, -157 °C) b. Calculate the heat required to bring 10.0g CCl2F2 from -29.8 °C as a liquid to the gas phase at 10.0 °C. (molar mass 120.91 g/mol) Cs (gas) = 0.074 kJ/mol·K AHvap = 20.1 kJ/mol AHfus = 4.14 kJ/mol
Consider the phase diagram shown. What is the normal sublimation point at 1 atm? Pressure (not to scale) 72.9 atm 5.1 atm 1 atm O 0°C O 100°C -56.7 °C 31°C -78.5 °C SOLID LIQUID GAS -78.5 °C -56.7 °C Temperature (not to scale) 31 °C
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)
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
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