preparation of butanone

2009-11-09 12:06 am
What is the balanced chemical equation for the reaction
butan-2-ol +Cr2O7 butanone +Cr3+

what is the ratio between butan-2-ol and Cr2O7 2-

1:1
or 3:1

回答 (1)

2009-11-09 7:00 pm
✔ 最佳答案
The full equation for the reaction is:
3C2H5CH(OH)CH3 + K2Cr2O7 + 4H2SO4 → 3C2­H5COCH3 + K2SO4 + Cr2(SO4)3 + 7H2O

The ionic equation is:
3C2H5CH(OH)CH3 + Cr2O7^2- + 8H^+ → 3C2­H5COCH3 + 2Cr^3+ + 7H2O

From either of the above equations, mole ratio
butan-2-ol : Cr2O7^2- = 3 : 1


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