Answer to Question #201162 in Chemistry for Mark

Question #201162

Identify whether the process is oxidation or reduction. Indicate the number of electrons lost or gained per mole of the reactant

1.     C2O42-   -     CO2

2.     CrO42-    -     Cr3+


1
Expert's answer
2021-06-04T10:11:04-0400

Solution:

1) C2O42- - 2e- → 2CO2 - oxidation process (2 electrons lost)

2) CrO42- + 4H2O + 3e- → Cr3+ + 8OH- - reduction process (3 electrons gained)

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