The authors reply to Bader

We thank Morris Bader for his interest in our manuscript. While some statements in the article may have been ambiguous, we hope readers will consider these facts.

1. Please remember that the concentration value for HCl and NaOH solutions found in Table 1 is much less than 0.1 mol dm^-3.
2. We did not reject “the basic premise of the Hittorf method” in our article. On the contrary, we stated that “It yields an apparent transference number, which cannot be distinguished from the results obtained by the moving-boundary method” (1). Strictly, the concentration unit in electrochemistry should be mol kg^-1 (i.e., molal), but in diluted solutions there is no difference between molarity (i.e., mol dm^-3) and molal, so molal can be displaced by molarity in diluted solution.
3. The electrode used in our experiment is inactive (a graphite or Pt electrode); we obtained the RSD values after running the experiment eight times.

We also refer interested readers to the relevant sections of the texts listed below (2, 3).

Literature Cited

1. Jinqing, K.; Qin, X.; Ke, C. J. Chem. Educ. 2001, 78, 937–938.
2. Moelwyn-Hughes, E. A. Physical Chemistry; Pergamon Press: London, 1957; pp 838–839.
3. Erkang, Sun, et al. Experimental of Physical Chemistry; Nanjin University Press: Nanjin, 1998; pp 72–75.