Abstract
The amperometric method of Foulk and
Bawden when applied to the titration of 0.001N thiosulphate solutions with
iodine is shown to be more precise and to have a smaller " blank"
than that using starch as indicator. With simple precautions the method has an
accuracy of at least 0.1 per cent. over the range pH 1-8, but at higher pH
there is serious error due to sulphate formation. The magnitudes of other
errors are determined and it is shown that all can be rendered negligible in
titrations of milli-normal solutions.
Cited by
14 articles.
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