Which one among the following chemicals is used as washing soda?

• Calcium carbonate

• Calcium bicarbonate

• Sodium carbonate

• Sodium bicarbonate

C.

Sodium carbonate

Sodium carbonate is a chemical name for soda ash and washing soda. Sodium carbonate is a household chemical with a variety of different uses. Its chemical formula, Na₂CO₃, is similar to that of baking soda, NaHCO₃.