2009 Exam03v2 - CHE132S09Ex03 Multiple Choice Identify the...

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CHE132S09Ex03Multiple ChoiceIdentify the choice that best completes the statement or answers the question.There are 20 questions, each counting 5%,plus one challenging bonus question for a bonus 5%..1.Which one of the following statements regarding solubility, the enthalpy of solution (H), and the entropy ofsolution (S), is notcorrect?A)The solubility of a solid increases with increasing temperature when both the enthalpy ofsolution and the entropy of solution are positive.B)The solubility of gases generally decreases with increasing temperature because both theenthalpy of solution and the entropy of solution are negative.C)Dissolving a substance in a solvent can be either an exothermic or an endothermic process.D)The reason NaCl is very soluble in water and AgCl is insoluble is a consequence of thelarger hydration energy for NaCl compared to AgCl..E)Enthalpies of solution are the sum oflattice energies and hydration energies with theappropriate + and – signs.
2.Purveyors of salts from the Dead Sea advertise that it is healthy to bath in a saturated solution of magnesiumchloride (MgCl2, 95.21 g/mol, Ksp= 740).How much magnesium chloride would you have to purchase to makeup 10.0 L of bath water saturated with magnesium chloride?
3.This problem is from a NY Times article.Researchers tested a group of 28 doctors.The doctors were told that afive-year old child suffering a potentially fatal allergic reaction to peanuts needed an emergency injection of 0.12mg of epinephrine.The bottles of epinephrine are labeled 10.0 mL of a 1:1000 aqueous solution.What volume ofthis solution would you inject if you were the doctor?
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/Introduction-to-General-Organic-and-Biochemistry-11th-Edition-9781285869759-626/
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Chapter 7 / Exercise 7-72
Introduction to General, Organic and Biochemistry
Brown
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4.Like dissolves likebecause __________________.

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Term
Spring
Professor
HANSON
Tags
Solubility, pts, E D B E E E E E C E B A D D B B C D
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Introduction to General, Organic and Biochemistry
The document you are viewing contains questions related to this textbook.
Chapter 7 / Exercise 7-72
Introduction to General, Organic and Biochemistry
Brown
Expert Verified

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