Oxidation or reduction????

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Oxidation or reduction????

is the formation of potassium chromate from chromium sulphate oxidation or reduction?

2006-07-03 19:48:44 · 2 answers · asked by Amon R 2 in Science & Mathematics ➔ Chemistry

2 answers

oxidation. take a look at the oxidation numbers for Cr:
K2CrO4 : 2 x 1 + X + 4 x (-2) = 0
=> X= +6
Cr2(SO4)3 : 2 x Y + 3 x (-2) = 0
=> Y= +3
X and Y are the oxidation numbers for chromium AFTER and BEFORE the reaction. since the oxidation number has increased, chromium has undergone oxidation.

2006-07-03 19:56:47 · answer #1 · answered by Anirudh 2 · 0⤊ 0⤋

i think it's redox reaction

2006-07-04 02:57:16 · answer #2 · answered by yoovraj s 2 · 0⤊ 0⤋