Physical Chemistry
2nd Edition
ISBN: 9781133958437
Author: Ball, David W. (david Warren), BAER, Tomas
Publisher: Wadsworth Cengage Learning,
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Chapter 6, Problem 6.9E
Identify and explain the sign on
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Consider two identical four-atom solids, one having 4 quanta of energy and the other having 10.(a) What observable property differs between these two solids?(b) Allow 3 quanta of energy to be transferred from the solid with 10 quanta to the solid with 4 quanta of energy. Determine whether this energy transfer is likely, explaining your reasoning.
Consider a series of compounds: Methane (CH3), Ethane (CH3 CH3), Propane (CH3 CH2 CH3), Butane (CH3 CH2 CH2 CH3), and Pentane (CH3 CH2 CH2 CH2 CH3). For each compound (a) Indicate whether its molecules are polar or non polar. (b) Indicate predominant type of intermolecular forces in the liquid state. (c) Calculate the molar mass. (d) Convert each boiling point from Celsius degrees to Kelvins. (e) Plot a graph of boiling point (in K) versus molar mass. (f) Show the relationship between molar mass and boiling point?
Select the correct statement concerning this sample phase diagram.
Group of answer choices
Point F represents the conditions for the equilibrium between solid and gas.
Region G represents the conditions under which the substance is a gas.
The region represented with C is solid.
All of the statements are correct.
Chapter 6 Solutions
Physical Chemistry
Ch. 6 - Prob. 6.1ECh. 6 - Prob. 6.2ECh. 6 - Prob. 6.3ECh. 6 - Prob. 6.4ECh. 6 - Prob. 6.5ECh. 6 - Prob. 6.6ECh. 6 - Prob. 6.7ECh. 6 - Prob. 6.8ECh. 6 - 6.9. Identify and explain the sign on in equation...Ch. 6 - 6.10. Use Hess’s law to prove that .
Ch. 6 - 6.11. Calculate the amount of heat necessary to...Ch. 6 - Prob. 6.12ECh. 6 - Assume that the vapH of an evaporating liquid...Ch. 6 - 6.14. As a follow-up to the previous exercise,...Ch. 6 - Prob. 6.15ECh. 6 - 6.16. What is for isothermal conversion of liquid...Ch. 6 -
6.17. Estimate the melting point of nickel, Ni,...Ch. 6 -
6.18. Estimate the boiling point of platinum, Pt,...Ch. 6 - Prob. 6.19ECh. 6 - Prob. 6.20ECh. 6 - 6.21. What assumption is used in the integration...Ch. 6 - Prob. 6.22ECh. 6 - Sulfur, in its cyclic molecular form having the...Ch. 6 - Prob. 6.24ECh. 6 - 6.25. Phosphorus exists as several allotropes that...Ch. 6 - Prob. 6.26ECh. 6 - 6.27. What is higher for a substance: its normal...Ch. 6 - 6.28. Elemental gallium is another substance whose...Ch. 6 - Prob. 6.29ECh. 6 - Consider the sulfur solid-state phase transition...Ch. 6 - 6.31. If it takes mega bars of pressure to change...Ch. 6 - Prob. 6.32ECh. 6 - Four alcohols have the formula C4H9OH: 1-butanol,...Ch. 6 - Prob. 6.34ECh. 6 - At 20.0C, the vapor pressure of ethanol is...Ch. 6 - Prob. 6.36ECh. 6 - Prob. 6.37ECh. 6 - Ethanol has a density of 0.789g/cm3 and a vapor...Ch. 6 - Prob. 6.39ECh. 6 - Prob. 6.40ECh. 6 - Prob. 6.41ECh. 6 - 6.42. At what pressure does the boiling point of...Ch. 6 - Prob. 6.43ECh. 6 - Prob. 6.44ECh. 6 - Prob. 6.45ECh. 6 - Prob. 6.46ECh. 6 - Prob. 6.47ECh. 6 - 6.48. Explain how glaciers, huge masses of solid...Ch. 6 - Prob. 6.49ECh. 6 - Prob. 6.50ECh. 6 - Prob. 6.51ECh. 6 - Prob. 6.52ECh. 6 - Prob. 6.53ECh. 6 - Prob. 6.54ECh. 6 - Prob. 6.55ECh. 6 - Prob. 6.56ECh. 6 - Prob. 6.57ECh. 6 - Use the phase diagram of water in Figure 6.6 and...Ch. 6 - Prob. 6.59ECh. 6 - Prob. 6.60ECh. 6 - At the triple point of a substance, the vapor...Ch. 6 - Prob. 6.62ECh. 6 - Prob. 6.63ECh. 6 - Prob. 6.64ECh. 6 - Prob. 6.65ECh. 6 - Prob. 6.66ECh. 6 - The phase diagram for elemental sulfur is shown in...Ch. 6 - Consider the phase diagram of sulfur in the...Ch. 6 - Prob. 6.69ECh. 6 - Rearrange the Clausius-Clapeyron equation,...
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- Explain why water boils at higher temperature under higher pressure (pure substance saturation temperature depends on pressure). Use knowledge of energy and energy transferring at molecular or atomic level during the phase change of a substance. You do not need to show calculations. • (a) the amount of heat absorbed as 1 kg of saturated liquid water boils at 100°C. (b) the amount of heat released as 1 kg of saturated water vapor condenses. Is a >b, a=b, or aarrow_forwardUsing the explanation of unbalanced forces as the source of surface tension, justify why it requires energy to increase the surface area of a liquid. Is there any circumstance in which energy is given off when increasing a liquids surface area?arrow_forward(a) Two pans of water are on different burners of a stove. Onepan of water is boiling vigorously, while the other is boilinggently. What can be said about the temperature of the waterin the two pans? (b) A large container of water and a smallone are at the same temperature. What can be said about therelative vapor pressures of the water in the two containers?arrow_forwarda)The table below gives two values of Delta H° for phase changes in molecular iodine. One value is the standard enthalpy of fusion and the other is the standard enthalpy of sublimation. b)Write a thermochemical equation to represent the vaporization of molecular iodine. Estimate the value for the standard enthalpy of vaporization(Show your work to support your quantitative answer to this problem )arrow_forwardBased on the type or types of intermolecular forces, predictthe substance in each pair that has the higher boiling point:(a) propane 1C3H82 or n-butane 1C4H102, (b) diethyl ether1CH3CH2OCH2CH32 or 1-butanol 1CH3CH2CH2CH2OH2,(c) sulfur dioxide 1SO22 or sulfur trioxide 1SO32, (d) phosgene1Cl2CO2 or formaldehyde 1H2CO2.arrow_forwardDefine about Viscosity? Explain the Working of Viscosity ?arrow_forwardThere are three sets of sketches below, showing the same pure molecular compound (water, molec sketches are drawn as if a sample of water were under a microscope so powerful that individual ato Use the slider to choose the correct sketch in each set. You may need the following information: EASUREMENT AND MATTER Distinguishing solid, liquid and gas phases of a pure substance ! 1 melting point of H₂O: 0.0°C boiling point of H₂O: 100.0 °C Explanation Q 85. °C A G N NO 2 Check F W S -27, "C it 3 ** X E H D X $ 4 O O 159. C ** 20 R 3 C % 5 LL MacBook Air T V A 6 G Y & 7 H Barrow_forwardHomework 4. Phases and phase changes. Due Friday, July 15th by email. 1. Reading phase diagrams. • 11.89 The phase diagram of sulfur is shown here. (a) How many triple points are there? (b) Monoclinic and rhombic are two allotropes of sulfur. Which is more stable under atmospheric conditions? (c) Describe what happens when sulfur at 1 atm is heated from 80°C to 200°C. P (atm) un 1.0 154°C 1288 atm Rhombic Liquid A 10-5 atm Vapor 95.4°C 119°C 1 (°C) Monoclinic 10 atmarrow_forwardQ1. The vapor pressure of tungsten can be obtained by the following equation LogP (atm) = 7.93345087/T(K) Then, at 2000°C, calculate (a) the vapor pressure of tungsten and (b) the volume occupied per tungsten atom in the vapor under these conditions.arrow_forwardCalculate the amount of energy in kilojoules needed to change 315 gg of water ice at −−10 ∘C∘C to steam at 125 ∘C∘Carrow_forwardThe main reason that distillation is a costly method for purifying water is the high energy required to heat and vaporize water. (a) Using the density, specific heat, and heat of vaporization of water from Appendix B, calculatethe amount of energy required to vaporize 1.00 gal of water beginning with water at 20 °C.arrow_forwardIn which phase are water molecules least able to have rotational motion?arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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