Substance X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature. Additionally, the values of these other properties of X have been determined: melting point 50. °C boiling point 85. °C enthalpy of vaporization enthalpy of fusion 8.00 kJ/mol 38.00 kJ/mol 2.80 g/cm³ (solid) 2.20 g/mL (liquid) density 42. J·K'mol (solid) heat capacity 45. J·K'mol' (liquid) 60. J·K'mol(vapor) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a small sample of X at 20 °C is put into an evacuated flask and heated at a constant rate until 8.0 kJ/mol of heat has been added to the sample. Graph the temperature of the sample that would be observed during this experiment. 120- 110 100 90- 80- 70- 60- 50 40 30- 20- 3. heat added (kl/mol) temperature (*c)

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Substance X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature. Additionally, the values of these other
properties of X have been determined:
melting point
50. °C
boiling point
85. °C
enthalpy of
vaporization
enthalpy of fusion
8.00 kJ/mol
38.00 kJ/mol
2.80 g/cm (solid)
2.20 g/mL (liquid)
density
42. J·K'mol1 (solid)
heat capacity
45. J·K'mol' (liquid)
60. J'K'mol(vapor)
You may also assume X behaves as an ideal gas in the vapor phase.
Suppose a small sample of X at 20 °C is put into an evacuated flask and heated at a constant rate until 8.0 kJ/mol of heat has been added to the sample.
Graph the temperature of the sample that would be observed during this experiment.
120-
110
100
90-
80-
70-
60-
50
40
30-
20-
1
7
heat added (kJ/mol)
temperature (°C)
Transcribed Image Text:Substance X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature. Additionally, the values of these other properties of X have been determined: melting point 50. °C boiling point 85. °C enthalpy of vaporization enthalpy of fusion 8.00 kJ/mol 38.00 kJ/mol 2.80 g/cm (solid) 2.20 g/mL (liquid) density 42. J·K'mol1 (solid) heat capacity 45. J·K'mol' (liquid) 60. J'K'mol(vapor) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a small sample of X at 20 °C is put into an evacuated flask and heated at a constant rate until 8.0 kJ/mol of heat has been added to the sample. Graph the temperature of the sample that would be observed during this experiment. 120- 110 100 90- 80- 70- 60- 50 40 30- 20- 1 7 heat added (kJ/mol) temperature (°C)
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