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Law of reciprocal proportions
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<h2 id="history">History</h2> <p>The law of reciprocal proportions was proposed in essence by Richter,<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> following his determination of neutralisation ratios of metals with acids. In the early 19th century it was investigated by <a href="/facts/J%C3%B6ns_Jacob_Berzelius/HakSv3sP">Berzelius</a>, who formulated it as follows:<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a> </p> When two substances, A and B have an affinity for two others, C and D, the ratio of the quantities C and D which saturate the same amount of A is the same as that between the quantities C and D which saturate the same amount of B. <p>Later <a href="/facts/Jean_Stas/6oTfCaxr">Jean Stas</a> showed that within <a href="/facts/Experimental_error/q7pa7bRt">experimental error</a> the stoichiometric laws were correct.<a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> </p> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, p. 21, ISBN 0-12-352651-5 <a href="0-12-352651-5" target="_blank">0-12-352651-5</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Holmyard, E.J. (1931). Inorganic Chemistry: A Text Book for Colleges and Schools (1st ed.). pp. 16–17. Retrieved April 8, 2014. <a href="/wiki/Eric_John_Holmyard" target="_blank">/wiki/Eric_John_Holmyard</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Holmyard, E.J. (1931). Inorganic Chemistry: A Text Book for Colleges and Schools (1st ed.). pp. 16–17. Retrieved April 8, 2014. <a href="/wiki/Eric_John_Holmyard" target="_blank">/wiki/Eric_John_Holmyard</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Holleman, Arnold Frederik; Wiberg, Egon (2001), Wiberg, Nils (ed.), Inorganic Chemistry, translated by Eagleson, Mary; Brewer, William, San Diego/Berlin: Academic Press/De Gruyter, p. 21, ISBN 0-12-352651-5 <a href="0-12-352651-5" target="_blank">0-12-352651-5</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Freund, Ida (1920). The Experimental Basis of Chemistry: Suggestions for a Series of Experiments Illustrative of the Fundamental Principles of Chemistry (1st ed.). pp. 294–295. Retrieved April 8, 2014. <a href="https://archive.org/details/experimentalbasi00freurich" target="_blank">https://archive.org/details/experimentalbasi00freurich</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Freund, Ida (1920). The Experimental Basis of Chemistry: Suggestions for a Series of Experiments Illustrative of the Fundamental Principles of Chemistry (1st ed.). pp. 294–295. Retrieved April 8, 2014. <a href="https://archive.org/details/experimentalbasi00freurich" target="_blank">https://archive.org/details/experimentalbasi00freurich</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> </ol>