The following sulphide salts forms white crystals except

JAMB Chemistry 2024 178 views
Source: JAMB · 2024

The following sulphide salts forms white crystals except

  1. K₂S
  2. Na₂S
  3. (NH₄)₂S ✓
  4. CaS
Explanation

Potassium sulphide, sodium sulphide and calcium sulphide are white solids when pure.

Ammonium sulphide, (NH₄)₂S, is different. It is unstable and is yellow, so it is the exception.

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