Sodium peroxide is a strong oxidizing, but when it is added to an acidified dichromate solution then already chromium is present in its highest oxidation state so the color of the solution shouldn't change, still, it is given in my textbook that color of the solution changes to blue. How does that happens?
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5$\begingroup$ en.wikipedia.org/wiki/Chromium(VI)_oxide_peroxide $\endgroup$ – andselisk♦ Nov 11 '20 at 13:00
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