final-2a-2007-pf

final-2a-2007-pf - Your name (Last)_ (First)_ Your section...

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Your name (Last)______________ (First)__________ Your section _______Your TA______________ Date ____________ Student ID ______________ Signature ______________ Practice Final Friday, March 3, 2007 1:30 PM – 3:30 PM CHEM 2A, Winter 2007 Professor Guo This is a closed book exam. The only thing you may consult with is a pocket calculator or similarly functional math tool. Problem points 1 /10 (Mid II) 2 /20 (Mid I) 3 /20 (Mid I) 4 /20 (Mid II) 5 /10 (Mid II) 6 /40 7 /60 8 /60 Total /240
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Please complete as much as possible because these are all partial credit problems Question 1 (10 points) 1 L of oxygen at 1 atm is transferred to a 0.5-L chamber filled with hydrogen at 1.5 atm at room temperature (25 °C), what is the total pressure right after the transfer? If the above reaction between oxygen and hydrogen consumes completely one of the gases, which gas is left? If the temperature of the chamber is 100 °C after the reaction, what are the partial pressures of the gases produced?
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Question 2 (20 points) Au reacts with O 2 in aqueous solution to form Au 3+ and OH - . Complete the reaction by first writing the half reactions and then balance the whole reaction. Assign an oxidation state to each
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This note was uploaded on 06/05/2008 for the course CHE 2a taught by Professor Tingguo during the Spring '08 term at UC Davis.

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final-2a-2007-pf - Your name (Last)_ (First)_ Your section...

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