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General Chemistry

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Assigning Oxidation States to Chromium Ions: Oxidation

CHEM-BI1M@R

For which of the following unbalanced reactions does chromium undergo oxidation?

Select ALL that apply.

A

$\textrm{Cr}^{3+} \rightarrow \textrm{Cr}$

B

$\textrm{Cr}^{2+} \rightarrow \textrm{Cr}^{3+}$

C

$\textrm{Cr}^{3+} \rightarrow \textrm{Cr}_2\textrm{O}_7^{2-}$

D

$\textrm{CrO}_4^{2-} \rightarrow \textrm{Cr}_2\textrm{O}_7^{2-}$

E

$\textrm{CrO}_4^{2-} \rightarrow \textrm{Cr}^{2+}$