ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 20, Number 3
JKCSEZ 20(3)
June 20, 1976 

The ultrasonic absorption has been measured in aqueous solution of dodecyl pyridinium chloride (DPC) at 20℃ over the frequency range of 0.1∼90 Mc.The excess absorption was observed only in solutions in which the concentration was higher than the critical micellar concentration(cmc). The mechanism for this feature was attributed to the reaction M2 ↔ M1 ＋ 1.2Cl- Where M2 and M1 are two types of micelle. The rate constants of the forward and the reverse reactions were 6.6 × 105 sec-1 and 2.7 × 1011sec-1 mol-1,2 respectively. Some kinetic charateristics including the free energy, enthalpy and entropy were calculated.