9
AssignmentMultiple Choice
Balancing Oxidation-Reduction Equations
Question 9 • Foothill-B Period-Chemistry-26/27B
Which pair of half-reactions represents the balanced half-reactions?
Answer
A
First: upper n superscript 5 plus, plus 2 e superscript minus right arrow upper N superscript 3 plus. Second: upper O superscript 2 minus right arrow upper O subscript 2 plus 4 e superscript minus.
B
First: upper n superscript 5 plus plus 4 e superscript minus right arrow 2 upper N superscript 3 plus. Second: 2 upper O superscript 2 minus right arrow upper O subscript 2 plus 4 e superscript minus.
C
First: 4 upper N 5 plus 2 e superscript minus right arrow 4 N superscript 3 plus. Second: 2 upper O superscript 2 minus right arrow 2 Upper O subscript 2 plus 4 e superscript minus.