halochromism

Noun

(uncountable)

(chemistry) Any change in colour resulting from a chemical reaction, especially from a change in pH

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"halochromism." YourDictionary, n.d. Web. 10 April 2019. <https://www.yourdictionary.com/halochromism>.

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halochromism. (n.d.). Retrieved April 10th, 2019, from https://www.yourdictionary.com/halochromism

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Mention may be made of the phenomenon of halochromism, the name given to the power of colourless or faintly-coloured substances of combining with acids to form highly-coloured substances without the necessary production of a chromophoric group. The researches of Adolf von Baeyer and Villiger, Kehrmann, Kauffmann and others, show that this property is possessed by very many and varied substances.

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