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KMnO4,K2Cr2O7要acidified?
2006-10-17 14:06:49 · 1 個解答 · 發問者 2003 2 in 科學 ➔ 化學
Use the hydrogen ion to combine with the oxygen of the complex ion, to release the core metal atom, e.g. if MnO4- is no acidified the resltant substance of the reaction is MnO2 the oxidation number only change from +7 to +4 and the reaction potential is lesser than +7 to +2 which Mn2+ is formed in acidified mixture.
2006-10-17 14:35:16 · answer #1 · answered by 殿居男 6 · 0⤊ 0⤋