Question

Write e chemcal name and chemcal formula of te a used to reme permanent hardness of water


Sodium carbonate, Na2CO3, is also known as washing soda. It can remove temporary and permanent hardness from water.​

Answer 1

Answer:

Sodium

is also known as washing soda. It can remove temporary and permanent hardness from water. It is soluble in water and adds a large amount of carbonate ions to the water. These react with dissolved calcium and magnesium ions in the water to produce insoluble precipitates. Sodium carbonate is soluble but calcium carbonate and magnesium carbonate are insoluble.