What is the oxidation half reaction in the following chemical reaction? Cr2O72-(aq) + 6 Cl-(aq) + 14 H+(aq) → 2 Cr3+(aq) + 3 Cl2(aq) + 7 H2O(l)
A) Cr2O72-(aq) + 14 H+(aq) + 6e- → 2 Cr3+(aq) + 7 H2O(l)
B) Cr2O72-(aq) + 14 H+(aq) → 2 Cr3+(aq) + 7 H2O(l) + 6e-
C) 2 Cl-(aq) → Cl2(aq) + 2e-
D) Cl2(aq) + 2e- → 2 Cl-(aq)
Correct Answer:
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