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Citation: Li Da-Zhen, Deng Xi-Xian, Wang Yu-Wen, Hou En-Jian. Studies on Kinetics of the Fast Reaction Between Potassium Permanganate and Acetylacetone[J]. Acta Physico-Chimica Sinica, ;1993, 9(05): 692-697. doi: 10.3866/PKU.WHXB19930523 shu

Studies on Kinetics of the Fast Reaction Between Potassium Permanganate and Acetylacetone

1.
Chemistry Department, Beijing Normal University, Beijing 100875

Received Date: 24 March 1992
Available Online: 15 October 1993

The kinetics of the fast reaction between MnO_4~- and diacetone (Hacac) in acidic medium has been studied by the continuous flow-spectrophotometric method. This reaction is second-order overall, and the order with respect to both MnO_4~- and Hacac is one. Activation energy E_α and preexponential factor A has been determined. E_α=4.91×10~4 J·mol~(-1), A=9.75×10~9 mol~(-1)·dm~3·s~(-1). and the relation between k and T is In(k/mol~(-1)·dm~3·s~(-1))=23.0-5.91×10~3/(T/K). A possible mechanism of this fast reaction has been proposed.
- Continuous-flow-spectrophotometric method; Fast reaction; KMnO₄; Diacetone
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