Limiting Mobilities of some Monovalent Ions and the Dissociation Constant of Acetic Acid at 25°

Abstract

MACINNES, Shedlovsky, and Longsworth in reply¹ to our recent letter with the above heading² have asserted, without experimental evidence, that our conductivity technique was subject to errors and that the discrepancies between the results are to be attributed to this cause. We would, however, point out that by using the cell constant determined with 0.01 N potassium chloride by Parker and Parker's method³ we have been able to reproduce Kohlrausch and Maltby's results⁴ for KCl, NaCl, and KIO₃ at 18° over the range 0.0001–0.01 N to within 0.1 per cent,⁵ and this, it appears to us, gives definite support to the view that our experimental results are trustworthy to at least 0.1 per cent.