Consider the following phase diagram. Phase diagram for compound A 5 1000 760 3 50 10 -25 25 100 150 Temperature, °C (not to scale) Which red dot represents the melting point of this compound at 760 torr? (Select ] What is the approximate melting temp for this substance at 760 torr? ( Select) Which red dot represents the boiling point of this compound :760 torr? (Select ] What is the approximate boiling temperature for this substance at 760 torr? ( Select ] Which red dot represents the triple point for this substance? ( Select ] What is the approximate temperature of the triple point? ( Select ] Pressure, torr (not to scale)

Consider the following phase diagram. Phase diagram for compound A 5 1000 760 3 50 10 -25 25 100 150 Temperature, °C (not to scale) Which red dot represents the melting point of this compound at 760 torr? (Select ] What is the approximate melting temp for this substance at 760 torr? ( Select) Which red dot represents the boiling point of this compound :760 torr? (Select ] What is the approximate boiling temperature for this substance at 760 torr? ( Select ] Which red dot represents the triple point for this substance? ( Select ] What is the approximate temperature of the triple point? ( Select ] Pressure, torr (not to scale)

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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In each of the following groups of substances, pick the one that has the given property. Justify your answer. (a) highest boiling point Ne C12₂ HI Since this compound has ---Select--- (b) highest freezing point NH3 H₂O KCI Since this compound has ---Select--- unlike the other two compounds, it has the ---Select--- unlike the other two compounds, it has the ---Select--- (c) lowest vapor pressure at 25°C C12 12 F₂ Since all the molecules are ---Select--- and this molecule is ---Select--- than the other two, it has the intermolecular forces and will have the highest boiling point. intermolecular forces and will have the highest freezing point. ---Select--- ↑ ---Select--- (d) lowest freezing point H₂Se H₂ Cse2 Since this molecule is ---Select--- and ---Select--- than the other two, it has the ---Select--- ♥ ---Select--- and will have the lowest vapor pressure. and will have the lowest freezing point.
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This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 500 400 300 200 octane acetylacetone orthoxylene 100. 100 110 120 130 140 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one O°c octane: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. acetylacetone: orthoxylene: Suppose a beaker of acetylacetone is put inside a sealed tank containing acetylacetone gas at 119. degree C and 206. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? more less the same vapor pressure, torr
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A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is a graph of the results: 12 230 temperature (°C) 210. 190. 170 150.- 130. 0. 10. What is the melting point of X ? Use this graph to answer the following questions: 30. heat added (kJ/mol) What phase (physical state) of X would you expect to find in the flask after. 17 kJ/mol of heat has been added? 40 50. 0°C (check all that apply) Osolic O liquid Ogas 60 olo Ar
= STATES OF MATTER Identifying phase transitions on a heating curve A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is a graph of the results: temperature (°C) 170. 150. 130. 110. 90 70. 0. 10. What is the melting point of X ? Use this graph to answer the following questions: heat added (kJ/mol) What phase (physical state) of X would you expect to find in the flask after 5 kJ/mol of heat has been added? *C 30. X 40. (check all that apply) solid liquid gas 0/3 50.
Use the observation in the first column to answer the question in the second column. observation question Which has the higher boiling point? O Substance E The enthalpy of vaporization of Substance E is smaller O Substance F than that of Substance F. Neither, E and F have the same boiling point. It's impossible to know without more information. Which has a higher boiling point? At 73 °C, Substance A has a O Substance A vapor pressure of 95. torr and Substance B has a vapor O Substance B pressure of 125. torr. O Neither, A and B have the same boiling point. O It's impossible to know without more information. Which has a higher vapor pressure? At 1 atm pressure, O Substance C Substance C boils at 14. °C and Substance D boils at O Substance D 37. °C. O Neither, C and D have the same vapor pressure. O It's impossible to know without more information. Continue MacBook Pro Search or tyne UPI
This graph shows how the vapor pressure of three liquids varies with temperature: 900. 800 700 600 500 400 300 200. ethylbenzene octane 100 acetic acid 0キ 100 110 120 130 140 temperature, °C Use the graph to answer the following questions: most volatile: choose one Which liquid is the most volatile? Which is the least volatile? least volatile: choose one °C ethylbenzene: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. °C octane: acetic acid: °C more Suppose a beaker of octane is put inside a sealed tank containing octane gas at 123. degree C and 818. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? less O the same vapor pressure, torr
Use the observation in the first column to answer the question in the second column. observation question Which has the higher boiling point? O Substance E The enthalpy of vaporization of Substance E is smaller Substance F than that of Substance F. Neither, E and F have the same boiling point. It's impossible to know without more information. Which has a higher enthalpy of vaporization? At 36 °C, Substance C has a Substance C vapor pressure of 140. tor and Substance D has a vapor Substance D pressure of 130. torr. Neither, C and D have the same enthalpy of vaporization. It's impossible to know without more information. Which has a higher enthalpy of vaporization? At 1 atm pressure, Substance A Substance A boils at -12. °C and Substance B Substance B boils at 1. °C. Neither, A and B have the same enthalpy of vaporization. It's impossible to know without more information.
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