Practice Exam 2 Blank 2001

Practice Exam 2 Blank 2001 - Exam 2 1. (6 pts) What is the...

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2001 1 1. (6 pts) What is the oxidation state (number) for a) N in NH 4 Cl b) I in IO 3 c) Cr in K 2 Cr 2 O 7 2. (8 pts) Indicate which of the following are oxidation-reduction reactions. Circle yes or no for each reaction. a) PCl 3 + Cl 2 —> PCl 5 y e s n o b) Cu + 2 AgNO 3 —> Cu(NO 3 ) 2 + 2 Ag yes no c) CO 2 + 2 LiOH —> Li 2 CO 3 + H 2 O yes no d) FeCl 2 + 2 NaOH—> Fe(OH) 2 + 2 NaCl yes no 3. (6 pts) Consider the following oxidation-reduction reaction. 2 F e 3+ + 2 I —> 2 Fe 2+ + I 2 Write the balanced oxidation and reduction half-reactions for this reaction. Oxidation half-reaction : Reduction half-reaction : 4. True or False: It takes more energy to ionize (remove an electron) from the n = 3 state than from the ground state of the hydrogen atom. a) True b) False 5. Consider an electron in the n = 3 state of the hydrogen atom. For which transition is the wavelength of light emitted longer? a) n = 3 to n = 2 b) n = 3 to n = 1 6. If a beam of red light ( λ = 7.0 x 10 –7 m) can eject electrons from a metal surface, will green light ( λ = 5.5 x 10
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This note was uploaded on 08/06/2008 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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Practice Exam 2 Blank 2001 - Exam 2 1. (6 pts) What is the...

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