Chem 22(C)

Problems in Oxidation-Reduction Reactions

Assigned Problems in S., B., R., Chapter 12, p 576

6, 8, 15, 27, 29, 32, 47, 49, 54, 68, 71, 12AII.7, 12AII.8, 12AII.12, 12AII.15, 12AII.22

Chapter 12 Problems for Section I

Problems worked below are those not included in the Section I problems.

6. (a) CrO₄^- O is -2 so 4 x 2 = 8 less one - so Cr⁺⁷

(b) Cr₂O₇^2- O is -2 so 7 x 2 = 14 less two - so Cr⁺⁶

(c) CrO₂ O is -2 so 2 x 2 = 4 - so Cr⁺⁴

8. (c) If Li is +1 then H must be -1.

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