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When chromate changes to dichromate in acid, the oxidation state of chromium
ARises to +7
BFalls to +3
CFalls to +4
DStays at +6
Answer & Solution
Correct answer: D. Stays at +6
The conversion is not a redox change, so chromium stays +6 in both CrO4(2-) and Cr2O7(2-).
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