Ultrasonic absorption in dimethyl sulphoxide solutions of alkali halides
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The ultrasonic absorption of solutions of alkali halides in dimethyl sulphoxide is studied by the pulse technique over the frequency range from 3.5 to 60 MHz. A relaxation is observed between 2 and 10 MHz for each salt studied. This relaxation is assigned to the second equilibrium in the two step formation of a contact ion pair from free ions in the solution.[M+]sol.+X-k12<->K21[M+ DMSO X-]sol.k23<->K32[M+X-]sol.The rate constants for this second step have an upper limit of 10^7 sec^-1. ΔVs for this step is found to be about 2 cm^3mole^-1.There is evidence that a relaxation at a frequency higher than the range of the apparatus is occuring. This may be due to the first step which is diffusion controlled and much faster.
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Copyright © 1968 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 1968
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