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Formation of Liesegang rings of mercuric chromate and the effect of gel medium on the condition of mercuric chromate

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Zusammenfassung

Zur Bildung von gut definierten Liesegang-Ringen in verschiedenen Gel-Medien ist es wesentlich, die Wirkung des Gel-Mediums auf die Bedingung des unlöslichen Salzes zu untersuchen. Im Fall von Quecksilber werden die gut definierten Ringe in Agar-Agar und Stärkegel entwickelt, wenn das gebildete Sol durch einen der beiden Reaktanten koaguliert werden kann. In Gelatine wird ein sehr stabiles Sol von Quecksilber-Chromat gebildet, welches durch Salzsäure koaguliert wird. Sehr schöne Ringe von Quecksilbersulfat bilden sich in Gelatinegel nur in Anwesenheit von Salzsäure.

Summary

For the formation of well defined Liesegang rings in different gel media, it is essential to study the effect of gel medium on the condition of the insoluble salt. In case of mercuric chromate, the well defined rings were developed in agar agar and starch gel as the sol formed is coagulable by one of the reactants. In gelatin medium, a very stable sol of mercuric chromate is formed, which is coagulated by hydrochloric acid. Beautiful bands of mercuric chromate were formed in gelatin gel only in presence of hydrochloric acid.

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References

  1. Liesegang, R. E., Z. Physical Chem. 88, 1 (1914).

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Author notes

  1. S. N. Swami

    Present address: Dunkar College, Bikaner, India

  2. K. Kant

    Present address: Faculty of Engineering, University of Jodhpur, India

Authors and Affiliations

  1. Dunkar College, Bikaner, India

    K. Kant

  2. Faculty of Engineering, University of Jodhpur, India

    S. N. Swami

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  1. S. N. Swami
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  2. K. Kant
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Swami, S.N., Kant, K. Formation of Liesegang rings of mercuric chromate and the effect of gel medium on the condition of mercuric chromate. Kolloid-Z.u.Z.Polymere 214, 57–59 (1966). https://doi.org/10.1007/BF01553114

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  • DOI: https://doi.org/10.1007/BF01553114

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