Question

"For removing permanent hardness of water".

What does this mean in chemistry.​

Answer 1

Explanation:

When the soluble salts of magnesium and calcium are present in the form of chlorides and sulfides in water, we call it permanent hardness because this hardness cannot be removed by boiling. We can remove this hardness by treating the water with washing soda.

Answer 2

QUESTION ;

FOR REMOVING PERMANENT HARDNESS OF WATER  WHAT DOES IT MEAN IN CHEMISTRY

ANSWER ;

WHEN SOLUBLE SALTS OF MAGNESIUM  AND CALCIUM ARE PRESENT IN FORM OF CHLORIDE AND SULFIDES IN WATER  WE CALL IT PERMANENT HARDNESS