Ch ical chemistr Reaction Kinetic Rice-Herzfeld mechanisms kalch3choj-kalCh 1/2 lCH [CH3CHOI The rate of formation of Cha is d[CHAzkbCH3CHOJLoCH31=h6/h,)1/2 [CH3CHOI 3/2 in agreement with the three-halves order observed experimentall However, the true mechanism is more complicated thanr-h mechanism Other products(acetone, CH3COCH3, and propanaldehyde, CH CH2 CHO) can be formed Prob.17.815 Physical Chemistry The rate of formation of CH4 is 1/ 2 3 1/ 2 3 [ ] [CH CHO] k k CH d a         • = 3/ 2 3 1/ 2 3 3 4 [ ][ ] [ ] [ ] CH CHO k k k b CH CHO CH k dt d CH d a b         = • = Rice-Herzfeld Mechanisms [ ] [ ] 0 2 ka CH3 CHO − kd •CH3 = in agreement with the three-halves order observed experimentally. However, the true mechanism is more complicated than R-H mechanism. Other products (acetone, CH3COCH3 , and propanaldehyde, CH3CH2CHO) can be formed. Prob. 17.81 Reaction Kinetics