Reaction help, please urgent?

0 ⤊

Reaction help, please urgent?

Hydrogen peroxide solution is added to an acidified solution of potassium dichromate,

what is the reaction

2007-10-22 14:18:37 · 2 answers · asked by aaadaj 1 in Science & Mathematics ➔ Chemistry

2 answers

Blue chromium peroxide is formed. [Cr(O2)]2O

H2O2 + Cr2O7 = 2 [Cr(O2)]2O + H2O

2007-10-22 14:26:09 · answer #1 · answered by Aurium 6 · 0⤊ 0⤋

This is a mystery. The first product is CrO5, chromium peroxide. But that breaks down to a mix of Cr3+ and Cr2O7= compounds. If you do the reaction in pure acetic acid, the lovely blue CrO5 stays around for a long time.

2007-10-22 14:25:29 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋