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In the Two Half-Reactions Shown Below,which Chromium Species Is the Strongest

Question 179

Multiple Choice

In the two half-reactions shown below,which chromium species is the strongest oxidizing agent? Cr2O72-(aq) + 14 H+(aq) + 6 e- → 2 Cr3+(aq) + 7 H2O(l) E° = + 1.33 V
CrO42-(aq) + 4 H2O(l) + 6 e- → Cr(OH) 3(s) + 5 OH-(aq) E° = - 0.13 V


A) Cr2O72-
B) Cr3+
C) CrO42-
D) Cr(OH) 3

Correct Answer:

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