Sentence Examples


  • Potassium iridium sesquichloride, K 3 IrC1 6.3H 2 O, is obtained by passing sulphur dioxide into a suspension of potassium chloriridate in water until all dissolves, and then adding potassium carbonate to the solution (C. Claus, Jour.
  • Iridium sulphide, IrS, is obtained when the metal is ignited in sulphur vapour.
  • The disulphide, IrS2, is formed when powdered iridium is heated with sulphur and an alkaline carbonate.
  • He showed that lead sulphide, a black substance containing only lead and sulphur, could be converted by oxidation into lead sulphate, a white compound containing oxygen as well as lead and sulphur.
  • The whole of the lead and sulphur of the sulphide was found to be present in the sulphate; in other words, the combining ratio of the lead and sulphur was not altered by the addition of the oxygen.

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