Sentence Examples


  • The sesquisulphide, Ir 2 S 3, is obtained as a brown precipitate when sulphuretted hydrogen is passed into a solution of one of the sesqui-salts.
  • They are precipitated from their alkaline solutions as cobalt sulphide by sulphuretted hydrogen, but this precipitation is prevented by the presence of citric and tartaric acids; similarly the presence of ammonium salts hinders their precipitation by caustic alkalis.
  • It may be prepared in the amorphous form by heating cobalt with sulphur dioxide, in a sealed tube, at 200° C. In the hydrated condition it is formed by the action of alkaline sulphides on cobaltous salts, or by precipitating cobalt acetate with sulphuretted hydrogen (in the absence of free acetic acid).
  • Certain yeasts exercise a reducing action, forming sulphuretted hydrogen, when sulphur is present.
  • It combines with sulphuretted hydrogen, in the .presence of water, to form the compound C 2 N 2 H 2 S, and in the presence of alcohol, to form the compound C 2 N 2.2H 2 S.

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