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Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produce a

Options

  1. Ared colouration
  2. Bblue colouration
  3. Cpurple colouration
  4. Dbrown colouration

Correct answer

C. purple colouration

Step-by-step solution

This test is used for the presence of sulphur in any compound. When sodium nitroprusside, react with sulphide ion, e . g . Na 2   S the following reaction takes place Na 2 S + Na 2 Fe CN 5 NO ⟶ Na 4 Fe CN 5 NO 5 Sod .   nitroprusside   purple   coloration   sod .   thionitroprusside

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