Difference between sulphate, sulphite, sulphide

The question asks about the differences between sulphate, sulphite, and sulphide:

• Sulphate (SO₄²⁻):
  • Chemical formula: SO₄²⁻
  • Oxidation state of sulphur: +6
  • Commonly found due to its many uses
• Sulphite (SO₃²⁻):
  • Chemical formula: SO₃²⁻
  • Oxidation state of sulphur: +4
  • Used in the food industry to preserve and store food items
• Sulphide (S²⁻):
  • Chemical formula: S²⁻
  • Oxidation state of sulphur: -2
  • Can exist in three types: organic, inorganic, and phosphine

Key difference: The number of oxygen atoms and the oxidation state of sulphur differ in sulphate, sulphite, and sulphide.

Summary of chemical formulas:

• Sulphide: S²⁻
• Sulphate: SO₄²⁻
• Sulphite: SO₃²⁻