Cr2O72-(aq) + 14H+(aq) + 6l-(aq) â†’ 2Cr3+(aq) + 3l(g) + 7H2O(I). The change in the oxidation number of oxygen in the equation above is? - SchoolNGR

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Cr2O72-(aq) + 14H+(aq) + 6l-(aq) â†’ 2Cr3+(aq) + 3l(g) + ...

Cr₂O₇^2-_(aq) + 14H⁺_(aq) + 6l^-_(aq) â†’ 2Cr³⁺_(aq) + 3l_(g) + 7H₂O_(I).
The change in the oxidation number of oxygen in the equation above is?

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B 1
C 2
D 7

Correct Answer: Option A

Explanation:

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