Final_B_W2005_Key - Chem 152 Final Section:_ Name:_ You...

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Page 1 Chem 152 Final Section:______________ Name:_________________ You will have 1 hour and 50 minutes. Do not begin the exam until you are instructed to start. Best of luck. Question 1________________/80 Question 2________________/20 Question 3________________/20 Question 4________________/20 Question 5________________/20 Question 6________________/20 Question 7________________/20 Total____________________/200
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Page 2 1. Multiple Choice (4 pts. each): a. Which of the following statements about quantum theory is incorrect: A : The momentum and position of an electron can be determined simultaneously. B: Lower energy orbitals are filled with electrons before higher energy orbitals. C: Hund’s rule dictates that electrons will occupy unfilled orbitals before occupied orbitals. D: No two electrons can have the same four quantum numbers. b. Of energy, enthalpy, heat, entropy, and the Gibbs energy how many are state functions? A: 2 B: 3 C : 4 D: 5 c. Using the following 1/2 cell reactions: 2 H + + 2 e - ⎯→ H 2 E 1 2 0 = (you should know this) H 2 O 2 + 2 H + + 2 e - 2 H 2 O E 1 2 0 = 1.78 V What is G° for the following reaction (in kJ): 2 H 2 O H 2 O 2 + H 2 A: -343 B : 343 C: 687 D: -687
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Page 3 d. For the following reaction under standard thermodynamic conditions: H 2 Ol ( ) ⎯→ H 2 Og ( ) H is more positive than E by 2.5 kJ mol -1 . This difference can be assigned to: A. The heat flow required to maintain a constant temperature B. The work done by the system C. The difference in the H-O bond strength between liquid and gaseous water. D. That’s just how H is calculated. e. Consider the following reaction: CH 4 g () + 4 Cl 2 g CCl 4 g ( ) + 4 HCl g ( ) H =− 434 kJ If 19.2 g of CH 4 undergoes this reaction at constant pressure, what amount of heat is transferred between system and surroundings? A : 520 kJ of heat are released to the surroundings B: 520 kJ of heat are absorbed by the system C: 360 kJ of heat are released to the surroundings D: 360 kJ of heat are absorbed by the system f. For the following reaction occurring in basic solution, in the balanced equation how many electrons are transferred?
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This note was uploaded on 01/18/2012 for the course CHEM 152A taught by Professor Chiu during the Fall '12 term at University of Washington.

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Final_B_W2005_Key - Chem 152 Final Section:_ Name:_ You...

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