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Periodic Crystallisation of Magnesium Hydroxide in Agar‐Agar Gel
Author(s) -
Ambrose S.,
Kanniah N.,
Gnanam F. D.,
Ramasamy P.
Publication year - 1982
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170170509
Subject(s) - flocculation , electrolyte , crystallization , magnesium , precipitation , chemistry , agar , agar gel , coagulation , analytical chemistry (journal) , chromatography , nuclear chemistry , physics , organic chemistry , psychology , electrode , microbiology and biotechnology , psychiatry , biology , meteorology , bacteria , genetics
Investigations are made to get the experimental conditions for obtaining periodic crystallisation of magnesium hydroxide in agar‐agar gel. A detailed study is made on the dependence of the velocity constant ( K ), the spacing coefficient \documentclass{article}\pagestyle{empty}\begin{document}$ \left( {p = \frac{{x_{n + 1} }}{{x_n }}} \right)'$\end{document} the length of the continuous precipitate and the width of the rings on the concentrations of the inner and outer electrolytes. Using S HINOHARA 's revised coagulation theory, the flocculation value F is calculated. F = Γ + C 30 , where Γ is the characteristic concentration of the outer electrolyte for which the flocculation starts and C 30 is the reduced concentration of the reaction product. The value of the concentration of the outer electrolyte for which the flocculation stops (γ) is calculated. The dependence of F on the concentrations of the reactants is also discussed. Observation of a coneshaped precipitation is also reported.