The use of glass electrodes for the determination of formation constants-IV Matters of weight.
Implicit and explicit methods of weighting titration data for the purpose of determining formation constants are considered. Many current computer programs make no provision at all for weighting and the exceptions do so in ways that have unknown effects. It is shown that formation constants obtained by optimization can, in practice, vary significantly when different methods of weighting are employed. However, none of these methods consistently yields the best results. Whenever possible, it is advisable to use several approaches to check for agreement between them.
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School of Mathematical and Physical Sciences, Murdoch University, Murdoch, Western Australia 6150.
Murray
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