giúp mình câu hỏi này vs...

Y

yuper

[TEX]5CHCCH_3 + 8KMnO_4 + 12H_2SO_4 ---> 5CH_3COOH + 5CO_2 + 4K_2SO_4 + 8MnSO_4 + 12H_2O[/TEX]

[TEX]Mn^{+7} + 5e ---> Mn^{+2}[/TEX]..................................x 8

[TEX]C^{-1} + C^{0} ---> C^{+4} + C^{+3} +8e[/TEX]....................x 5
 
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