Chapter 20 Practice Questions
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1)The gain of electrons by an element is called _____. A)oxidation B)reduction C)sublimation D)fractionation E)disproportionation 1) 2)_____ is reduced in the following reaction: Cr2O72- + 6S2O32- + 14H+ → 2Cr3+ + 3S4O62- + 7H2O
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