The formula of Soda ash is-

CONCEPT:

Soda Ash

• Soda ash, also known as sodium carbonate, is a sodium salt of carbonic acid with the chemical formula Na₂CO₃.
• It is commonly used in the manufacturing of glass, paper, and detergents.
• Soda ash can exist in different hydrated forms, but the anhydrous form is most commonly referred to as soda ash.

EXPLANATION:

• The chemical formula of soda ash:

  Soda ash (sodium carbonate) has the chemical formula Na₂CO₃.

• Hydrated forms of sodium carbonate:
  • Na₂CO₃ · 10H₂O (Sodium carbonate decahydrate)
  • Na₂CO₃ · 2H₂O (Sodium carbonate dihydrate)
  • Na₂CO₃ · H₂O (Sodium carbonate monohydrate)

Therefore, the correct answer is Na₂CO₃.