2010F - CHEM 126101 Chapter 17 Basic Homework Thermodynamics II

2010F - CHEM 126101 Chapter 17 Basic Homework Thermodynamics II

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Unformatted text preview: 10F - CHEM 126101 - GEN CHEMISTRY II You are logged in as Andrew Sindt ( Logout ) You are here NJIT / 2010F - CHEM 126101 / Quizzes / Chapter 17 Basic Homework: Thermodynamics II / Review of attempt 7 Chapter 17 Basic Homework: Thermodynamics II Review of attempt 7 Started on Saturday, 30 October 2010, 11:23 PM Completed on Saturday, 30 October 2010, 11:27 PM Time taken 3 mins 19 secs Finish review Marks 23/24 Grade 6.71 out of a maximum of 7 ( 96 %) Question 1 Marks: 1 Which of the following processes is NOT spontaneous? Examples of spontaneous processes Choose one answer. a. A smoker's smokes gathers around the smoker. b. A woman enters a room. Shortly thereafter her perfume can be smelled by those on the other side of the room. c. Leaves decay. d. A lighted match burns. e. Water evaporates from an open container on a dry day (low humidity). Correct Marks for this submission: 1/1. Question 2 Marks: 1 Which of the following statements is INCORRECT? Spontaneous processes and change in energy Choose one answer. a. A system tends to seek a minimum in energy. For reactions this means that exothermic reactions tend to be spontaneous. b. Water fills a glass from the bottom up because this gives the lowest potential energy. c. Dynamite exploding is an example of an exothermic reaction. d. Ice forming during a reaction on a warm day is an example of an exothermic reaction. e. Two solutions are combined and vigorous boiling ensues is an example of an exothermic reaction. Correct Marks for this submission: 1/1. Question 3 Marks: 1 Which of the following statements is INCORRECT? Spontaneous processes and change in entropy Enthalpy versus entropy Choose one answer. a. The more ordered a system, the greater its entropy. b. Perfume molecules spread throughout the room is more random or disordered than having them confined to a small portion of the room. c. The entropy of the perfume molecules is larger when they are spread throughout the room than when they are confined to a small portion of the room. d. The enthalpy of the system is more important in determining the outcome at a low temperature. e. The entropy of the system is more important in determining the outcome at a high temperature. Correct Marks for this submission: 1/1. Question 4 Marks: 1 Which of the following statements is INCORRECT? Entropy Choose one answer. a. The entropy is larger when a disolved salt in a liquid is uniform or spread throughout the liquid than when it is highly concentration in a small portion of the liquid....
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This note was uploaded on 11/09/2010 for the course CHEM Chem taught by Professor Petrova during the Spring '09 term at NJIT.

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2010F - CHEM 126101 Chapter 17 Basic Homework Thermodynamics II

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