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 11, Problem 7E
Heat is released when some solutions form; heat is absorbed when other solutions form. Provide a molecular explanation for the difference between these two types of spontaneous processes.
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Chapter 11 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 11 - How do solutions differ from compounds? From other...Ch. 11 - Which of the principal characteristics of...Ch. 11 - When KNO3 is dissolved in water, the resulting...Ch. 11 - Give an example of each of the following types of...Ch. 11 - Indicate the most important types of...Ch. 11 - Predict whether each of the following substances...Ch. 11 - Heat is released when some solutions form; heat is...Ch. 11 - Solutions of hydrogen in palladium may be formed...Ch. 11 - Explain why the ions Na+ and CI- are strongly...Ch. 11 - Explain why solutions of HBr in benzene (a...
Ch. 11 - Consider the solutions presented: (a) Which of the...Ch. 11 - Compare the processes that occur when methanol...Ch. 11 - What is the expected electrical conductivity of...Ch. 11 - Why are most solid ionic compounds electrically...Ch. 11 - Indicate the most important type of intermolecular...Ch. 11 - Suppose you are presented with a clear solution of...Ch. 11 - Supersaturated solutions of most solids in water...Ch. 11 - Suggest an explanation for the observations that...Ch. 11 - Calculate the percent by mass of KBr in a...Ch. 11 - Which of the following gases is expected to be...Ch. 11 - At 0 C and 1.00 atm, as much as 0.70 g of O2 can...Ch. 11 - Refer to Figure 11.11. (a) How did the...Ch. 11 - The Henry's law constant for CO2 is 3.4102 M/atm...Ch. 11 - The Henry's law constant for O2 is 1.3103M /atm at...Ch. 11 - How many liters of HCI gas, measured at 30.0 C and...Ch. 11 - Which is are part of the macroscopic domain of...Ch. 11 - What is the microscopic explanation for the...Ch. 11 - Sketch a qualitative graph of the pressure versus...Ch. 11 - A solution of potassium nitrate, an electrolyte,...Ch. 11 - What are the mole fractions of H3PO4 and water in...Ch. 11 - What are the mole fractions of HNO3 and water in a...Ch. 11 - Calculate the mole fraction of each solute and...Ch. 11 - Calculate the mole fraction of each solute and...Ch. 11 - Calculate the mole fractions of methanol, CH3OH;...Ch. 11 - What is the difference between a 1 M solution and...Ch. 11 - What is the molality of phosphoric acid, H3PO4, in...Ch. 11 - What is the molality of nitric acid in a...Ch. 11 - Calculate the molality of each of the following...Ch. 11 - Calculate the molality of each of the following...Ch. 11 - The concentration of glucose, C6H12O6, in normal...Ch. 11 - A 13.0% solution of K2CO3 by mass has a density of...Ch. 11 - Why does 1 mol of sodium chloride depress the...Ch. 11 - What is the boiling point of a solution of 115.0 g...Ch. 11 - What is the boiling point of a solution of 9.04 g...Ch. 11 - What is the freezing temperature of a solution of...Ch. 11 - What is the freezing point of a solution of 9.04 g...Ch. 11 - What is the osmotic pressure of an aqueous...Ch. 11 - What is osmotic pressure of a solution of bovine...Ch. 11 - What is the molar mass of a solution of 5.00 g of...Ch. 11 - A sample of an organic compound (a nonelectrolyte)...Ch. 11 - A 1.0 m solution of HCI in benzene has a freezing...Ch. 11 - A solution contains 5.00 g of urea, CO(NH2)2, a...Ch. 11 - A 12.0-g sample of a nonelectrolyte is dissolved...Ch. 11 - Arrange the following solutions in order by their...Ch. 11 - Calculate the boiling point elevation of 0.100 kg...Ch. 11 - How could you prepare a 3.08 m aqueous solution of...Ch. 11 - A sample of sulfur weighing 0.210 g was dissolved...Ch. 11 - In a significant experiment performed many years...Ch. 11 - Lysozyme is an enzyme that cleaves cell walls. A...Ch. 11 - The osmotic pressure of a solution containing 7.0...Ch. 11 - The osmotic pressure of human blood is 7.6 atm at...Ch. 11 - What is the freezing point of a solution of...Ch. 11 - What is the boiling point of a solution of NaCI in...Ch. 11 - The sugar fructose contains 40.0% C, 6.7% H, and...Ch. 11 - The vapor pressure of methanol, CH3OH, is 94 torr...Ch. 11 - The triple point of air-free water is defined as...Ch. 11 - Meat can be classified as fresh (not frozen) even...Ch. 11 - An organic compound has a composition of 93.46% C...Ch. 11 - A sample of HgCI2 weighing 9.41 g is dissolved in...Ch. 11 - A salt is known to be an alkali metal fluoride. A...Ch. 11 - Identify the dispersed phase and the dispersion...Ch. 11 - Distinguish between dispersion methods and...Ch. 11 - How do colloids differ from solutions with regard...Ch. 11 - Explain the cleansing action of soap.Ch. 11 - How can it be demonstrated that colloidal...
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- In the box below, specify which of the given compounds are very soluble in polar aprotic solvents. You may select more than one compound. Choose one or more: NaCl NH4Cl CH3CH2CH2CH2CH2CN CH3CH2OH hexan-2-one NaOH CH3SCH3arrow_forwardOn the following structure, select all of the atoms that could ACCEPT a hydrogen bond. Ignore possible complications of aromaticity. When selecting be sure to click on the center of the atom.arrow_forwardRank the compounds below from lowest to highest melting point.arrow_forward
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY