What is HYDROSULPHIDES?

If potassium be heated in hydrogen sulphide gas potassium hydrosulphide is formed, hydrogen being at the same time set free H2S + K = KHS + H, and the same substance is produced in solution, by passing a current of hydrogen sulphide into a solution of potassium sulphide Hydrosulphides of the alkalies and aikaline earths are also termed sulphydrates. Sodium hydrosulphide can be obtained in the form of colourless needles, soluble in water, by treatuig calcium sulphide with sodium bisulphate.

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Definition of  HYDROSULPHIDES