Redox reactions -help! Watch

Aniaa
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So I try to do this: CH3CHOHCH3 + K2Cr2O7 + H2SO4 ----> CH3COCH3 + Cr2(SO4)3 + K2SO4 +H2O and I ended up with stechimetry respectively: 3, 2, 11 ---> 3, 2, 2,14.
However, the oxygen and suflur doesn't match.

Help please, my final note depends on that!

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Dreaming spires
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(Original post by Aniaa)
So I try to do this: CH3CHOHCH3 + K2Cr2O7 + H2SO4 ----> CH3COCH3 + Cr2(SO4)3 + K2SO4 +H2O and I ended up with stechimetry respectively: 3, 2, 11 ---> 3, 2, 2,14.
However, the oxygen and suflur doesn't match.

Help please, my final note depends on that!

3CH3CHOHCH3 + K2Cr2O7 + 4H2SO4 -> 3CH3COCH3 + Cr2(SO4)3 + K2SO4 + 7H2O

EDIT: Remember that (SO4)3 equals S3O12.
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Aniaa
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(Original post by Dreaming spires)
3CH3CHOHCH3 + K2Cr2O7 + 4H2SO4 -> 3CH3COCH3 + Cr2(SO4)3 + K2SO4 + 7H2O

EDIT: Remember that (SO4)3 equals S3O12.
thank you very much!!
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Dreaming spires
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(Original post by Aniaa)
thank you very much!!
Any time.
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