Studies on the Homogeneous Precipitiation of Silver Halide

Silver Halide의 均一沈澱法에 關한 硏究

  • Park, Doo-Won (Department of Chemistry, College of Liberal Arts and Science, Kyung Pook National University) ;
  • Oh, Sang O. (Department of Chemistry, College of Liberal Arts and Science, Kyung Pook National University)
  • 박두원 (慶北大學校 文理科大學 化學科) ;
  • 오상오 (慶北大學校 文理科大學 化學科)
  • Published : 19621200

Abstract

The silver halide precipitate tends to separate in curdy form of flocculated colloid when it is precipitated by direct mixing of reactant solutions. This type of precipitate has a great tendency to adsorb or occlude foreign ions in the solution.When silver halide in precipitated from homogeneous solution using the slow hydrolysis of Alkyl halide or Ally halide, the precipitate becomes dense, filterable and uniform in particle size which is very advantageous in gravimetric analysis.We found that silver halide precipitates obtained from homogeneous solution with hydrogen halide formed by the hydrolysis of alkyl halide do not give the color change with fluorescein as adsorption indicater, while silver halide precipitates obtained by direct mixing method give sharply pink color which appear to be uniformly distributed through the solution in silver ion excess.

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References

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