Can anyone balance this equation?

0 ⤊

Can anyone balance this equation?

Cr(OH)4-(aq) + OH-(aq) + H2O2 --> CrO42- (aq) + H2O (l)
Thank You!

2007-10-01 06:31:52 · 1 answers · asked by jellykelly11789 1 in Science & Mathematics ➔ Chemistry

1 answers

Cr(OH)4(-) + OH(-) + H2O2 --> CrO4(2-) + H2O
Please start from the half reactions:
Cr(OH)4(-) + 4OH(-) ---> CrO4(2-) + 4H2O + 3e-(1)
H2O2 + 2H(+) + 2e- ---> 2H2O.......................(2)
2(1) + 3(2):
2Cr(OH)4(-) + 2OH(-) + 3H2O2 ---> 2CrO4(2-) + 8H2O

2007-10-03 14:17:27 · answer #1 · answered by Hahaha 7 · 0⤊ 0⤋