Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Textbook Question
Chapter 10, Problem 14E
On the basis of dipole moments and/or hydrogen bonding, explain in a qualitative way the differences in the boiling points of acetone (56.2 °C) and 1propanol (97.4 °C), which have similar molar masses.
Expert Solution & Answer
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(a) How do the structures of these molecules account for these
differences in boiling point? Provide a full account of the structures
and their influence on the differences in this physical property.
Name
Boiling Point
methane
-161.6 °C
methanol
64.7 °C
propane
-42 °C
propan-1-ol
97 °C
All compounds in a chemical series have the same commonality of structure, therefore the same predominant IMF. Using concepts of intermolecular forces, please explain thetrends of decreasing ΔTwith increasing molar mass within a chemical series.
3. (a) The Lattice enthalpy for the solid ionic compound AgBr is +900. kJ/mole.
Write the chemical equation that corresponds to the Lattice Enthalpy for AgBr(s) in the space above.
Then explain in your own words why this is a large positive number.
(b) The hydration enthalpy for AgBris -821 kJ/mole.
Write the chemical equation that corresponds to the Hydration Enthalpy for AgBr(s) in the space above.
Then explain in your own words why this is a large negative number.
(c) Would you expect this compound to be soluble in water? Why/Why not? Calculate anything you need in
order to figure this out, and explain your answer.
Chapter 10 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 10 - In terms of their bulk properties, how do liquids...Ch. 10 - In terms of the kinetic molecular theory, in what...Ch. 10 - In terms of the kinetic molecular theory, in what...Ch. 10 - Explain why liquids assume the shape of any...Ch. 10 - What is the evidence that all neutral atoms and...Ch. 10 - Open the PhET States of Matter Simulation...Ch. 10 - Define the following and give an example of each:...Ch. 10 - The types of intermolecular forces in a substance...Ch. 10 - Why do the boiling points of the noble gases...Ch. 10 - Neon and HF have approximately the same molecular...
Ch. 10 - Arrange each of the following sets of compounds in...Ch. 10 - The molecular mass of butanol, C4H9OH, is 74.14;...Ch. 10 - On the basis of intermolecular attractions,...Ch. 10 - On the basis of dipole moments and/or hydrogen...Ch. 10 - The melting point of H2O(s) is O C. Would you...Ch. 10 - Silane SiH4, phosphine (PH3), and hydrogen sulfide...Ch. 10 - Explain why a hydrogen bond between two water...Ch. 10 - Under certain conditions, molecules of acetic...Ch. 10 - Proteins are chains of amino acids that can form...Ch. 10 - The density of liquid NH3 is 0.64 g/mL; the...Ch. 10 - Identify the intermolecular forces present in the...Ch. 10 - The test tubes shown here contain equal amounts of...Ch. 10 - Although steel is denser than water, a steel...Ch. 10 - The surface tension and viscosity values for...Ch. 10 - You may have heard someone use the figure of...Ch. 10 - It is often recommended that you let your car...Ch. 10 - The surface tension and viscosity of water at...Ch. 10 - At 25 C, how high will water rise in a glass...Ch. 10 - Water rises in a glass capillary tube to a height...Ch. 10 - Heat is added to boiling water. Explain why the...Ch. 10 - Heat is added to ice at 0 C. Explain why the...Ch. 10 - What feature characterizes the dynamic equilibrium...Ch. 10 - Identify two common observations indicating some...Ch. 10 - Identify two common observations indicating some...Ch. 10 - What is the relationship between the...Ch. 10 - What is the relationship between the...Ch. 10 - Why does spilled gasoline evaporate more rapidly...Ch. 10 - Carbon tetrachloride, CCl4, was once used as a dry...Ch. 10 - When is the boiling point of a liquid equal to its...Ch. 10 - How does the boiling of a liquid differ from its...Ch. 10 - Use the information in Figure 10.24 to estimate...Ch. 10 - A syringe at a temperature of 20 C is filled with...Ch. 10 - Explain the following observations: (a) It takes...Ch. 10 - The enthalpy of vaporization of water is larger...Ch. 10 - Explain why the molar enthalpies of vaporization...Ch. 10 - Explain why the enthalpies of vaporization of the...Ch. 10 - The enthalpy of vaporization of CO2(l) is 9.8...Ch. 10 - The hydrogen fluoride molecule, HF, is more polar...Ch. 10 - Ethyl chloride (boiling point, 13 C) is used as a...Ch. 10 - Which contains the compounds listed correctly in...Ch. 10 - How much heat is required to convert 422 g of...Ch. 10 - Evaporation of sweat requires energy and thus take...Ch. 10 - Titanium tetrachloride, TiCl4, has a melting point...Ch. 10 - From the phase diagram for water (Figure 10.31),...Ch. 10 - What phase changes will take place when water is...Ch. 10 - Pressure cookers allow food to cook faster because...Ch. 10 - From the phase diagram for carbon dioxide in...Ch. 10 - Determine the phase changes that carbon dioxide...Ch. 10 - Consider a cylinder containing a mixture of liquid...Ch. 10 - Dry ice, CO2(s) , does not melt at atmospheric...Ch. 10 - If a severe storm results in the loss of...Ch. 10 - Is it possible to liquefy nitrogen at room...Ch. 10 - Elemental carbon has one gas phase, one liquid...Ch. 10 - What types of liquids typically form amorphous...Ch. 10 - At very low temperatures oxygen, O2, freezes and...Ch. 10 - As it cools, olive oil slowly solidifies and forms...Ch. 10 - Explain why ice, which is a crystalline solid, has...Ch. 10 - Identify the type of crystalline solid (metallic,...Ch. 10 - Identify the type of crystalline solid (metallic,...Ch. 10 - Classify each substance in the table as either a...Ch. 10 - Classify each substance in the table as either a...Ch. 10 - Identify the following substances as ionic,...Ch. 10 - Substance A is shiny, conducts electricity well,...Ch. 10 - Substance B is hard, does not conduct electricity,...Ch. 10 - Describe the crystal structure of iron, which...Ch. 10 - Describe the crystal structure of Pt, which...Ch. 10 - What is the coordination number of a chromium atom...Ch. 10 - What is the coordination number of an aluminum...Ch. 10 - Cobalt metal crystallizes in a hexagonal closest...Ch. 10 - Nickel metal crystallizes in a cubic closest...Ch. 10 - Tungsten crystallizes in a body-centered cubic...Ch. 10 - Platinum (atomic radius =1.38) crystallizes in a...Ch. 10 - Barium crystallizes in a body-centered cubic unit...Ch. 10 - Aluminum (atomic radius = 1.43 ) crystallizes in a...Ch. 10 - The density of aluminum is 2.7 g/cm3; that of...Ch. 10 - The free space in a metal may be found by...Ch. 10 - Cadmium sulfide, sometimes used as a yellow...Ch. 10 - A compound of cadmium, tin, and phosphorus is used...Ch. 10 - What is the formula of the magnetic oxide of...Ch. 10 - A compound containing zinc, aluminum, and sulfur...Ch. 10 - A compound of thallium and iodine crystallizes in...Ch. 10 - Which of the following elements reacts with sulfur...Ch. 10 - What is the percent by mass of titanium in rutile,...Ch. 10 - Explain why the chemically similar alkali metal...Ch. 10 - As minerals were formed from the molten magma,...Ch. 10 - Rubidium iodide crystallizes with a cubic unit...Ch. 10 - One of the various manganese oxides crystallizes...Ch. 10 - NaH crystallizes with the same ciystal structure...Ch. 10 - Thallium(I) iodide crystallizes with the same...Ch. 10 - A cubic unit cell contains manganese ions at the...Ch. 10 - What is the spacing between crystal planes that...Ch. 10 - A diffracrometer using X-rays with a wavelength of...Ch. 10 - A metal with spacing between planes equal to...Ch. 10 - Gold crystallizes in a face-centered cubic unit...Ch. 10 - When an electron in an excited molybdenum atom...
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- Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2arrow_forwardHydrates are ionic compounds that contain water molecules that are incorporated into the structure of the ionic compounds in a specific ratio. For example, barium chloride dihydrate has the chemical formula BaCl, 2H,O in which the two water molecules are incorporated into every unit of BaCl, ionic compound. In this experiment you will determine what are the final products that are obtained from heating of BaCl, 2H,0. Depending on the extent of heating, three different sets of products are predicted as listed below: BaCl, 2H,Os) heat BaCl,H,O6) + H,Og) Reaction 1 (s), BaCl, 2H,O(s) heat BaCl2e) 2H20(9) Reaction 2 + H2O(9) 2HCI (9) BaCl, 2H,O(s) heat BaO(s) Reaction 3 QUESTION If the mass of BaCl, 2H,Os, sample subject to thermal decomposition was 2.526 g, what is the theoretical yield of BaO(s) (The molar mass of BaCl, 2H,O(s) is 244.2 g; the molar mass of BaOs) is 153.3 g) (s) if Reaction 3 occurred.arrow_forwardOn the basis of dipole moments and/or hydrogen bonding, explain in a qualitative way the differences in the boiling points of acetone (56.2 °C) and 1-propanol (97.4 °C), which have similar molar masses.arrow_forward
- Hydrates are ionic compounds that contain water molecules that are incorporated into the structure of the ionic compounds in a specific ratio. For example, barium chloride dihydrate has the chemical formula BaCl, 2H,O in which the two water molecules are incorporated into every unit of BaCl, ionic compound. In this experiment you will determine what are the final products that are obtained from heating of BaCl, 2H,0. Depending on the extent of heating, three different sets of products are predicted as listed below: heat Reaction 1 BaCl, 2H,O(s) BaCl,H2O(s) + H2O(g) 2H20(g) Reaction 2 heat BaCl2(s) + BaCl, 2H,O) BaO(s) H2O(g) 2HCI (g) Reaction 3 heat + BaCl, 2H,O(s) + QUESTION If the mass of BaCl, 2H2OS) sample subject to thermal decomposition was 2.526 g, what is the theoretical yield of BaCl,H2Os) if Reaction 1 occurred. (The molar mass of BaCl, 2H,Os) is 244.2 g; the molar mass of BaCl,H,Os) is 226.2 g)arrow_forwardThe vapor pressure of propanone is 15.40 kPa at 10C and 81.65 at 50C. Calculate the temperature at which propanone will boil at a pressure of 101.3.arrow_forwardCalculate the change in the chemical potential of liquid water and water vapor when the pressure is increased from 1.0 atm to 10 atm at 100°C. Discuss the effect of the pressure increase on the equilibrium between the liquid water and the water vapor. Assume that water vapor behaves perfectly and the density of water is 1 g/cm3.arrow_forward
- Does the entropy of the system increase, decrease, or stay the same when a solid sublimes?arrow_forward3. (a) The Lattice enthalpy for the solid ionic compound AgBr is +900. kJ/mole. Write the chemical equation that corresponds to the Lattice Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large positive number. (b) The hydration enthalpy for AgBr is -821 kJ/mole. Write the chemical equation that corresponds to the Hydration Enthalpy for AgBr(s) in the space above. Then explain in your own words why this is a large negative number.…arrow_forward6. Ethanoic acid (CH3COOH) has a much lower vapor pressure than ethanol (CH3CH2OH). What is the most reasonable explanation? (A) The polarizability of two oxygen atoms increases the London forces of attraction in ethanoic acid compared with ethanol. (B) Hydrogen bonding in ethanoic acid is the strongest attractive force and is mainly responsible for the observed data. (C) Both ethanol and ethanoic acid have an – OH, so the difference is the dipole of the second oxygen that increases the attractive forces. (D) Ethanol has an - OH group and can hydrogen bond; therefore, the London forces must cause the effect.arrow_forward
- When 2.62 g of the nonvolatile solid anthracene, C14H10,is dissolved in 100.0 g of cyclohexane, C6H12, the boilingpoint of the cyclohexane is raised by 0.41°C. Calculate Kbfor cyclohexane.arrow_forwardWhat gas law is applicable to the fractional distillation of ethanol-water mixture?arrow_forwardNo Plagiarism Please! Acrylonitrile and ethyl acetate have the same boiling point: 77.2ºC. In one to two sentences, explain what outcome you would expect if a mixture of these two substances were distilled.arrow_forward
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