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chem exam 3 answers- Spring 2006 - Sparks

chem exam 3 answers- Spring 2006 - Sparks - CH 305 Fall...

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CH 305, Fall 2006 Dr. Sparks Practice Exam 3 Key 1. Describe coal switching A. utilizing coal naturally lower in sulfur content B. utilizing coal naturally higher in sulfur content C. utilizing coal naturally lower in nitrogen content D. utilizing coal naturally higher in nitrogen content Consider the following two half-reactions for questions 2-4: Half-reaction X: Ag Æ Ag + Half-reaction Y: 2 HBrO + 2 H + Æ Br 2 + 2 H 2 O 2. You would balance half-reaction X by adding ___________ and would classify this reaction as a(n) ________________ reaction. A. 1 electron to the right; oxidation B. 1 electron to the right; reduction C. 1 electron to the left; oxidation D. 1 electron to the left; reduction E. 2 electrons to the right; oxidation F. 2 electrons to the right; reduction G. 2 electrons to the left; oxidation H. 2 electrons to the left; reduction 3. You would balance half-reaction X by adding ___________ and would classify this reaction as a(n) ________________ reaction. A. 1 electron to the right; oxidation B. 1 electron to the right; reduction C. 1 electron to the left; oxidation D. 1 electron to the left; reduction E. 2 electrons to the right; oxidation F. 2 electrons to the right; reduction G. 2 electrons to the left; oxidation H. 2 electrons to the left; reduction
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