Sodium hexametaphosphate is known as

NaH_(2)PO_(4)overset(230^(@)C)(to)Na_(3)(P_(3)O_(9))overset(638^(@)C)(to)(NaPO_(3))_(n)(to)D (glossy solid) Compound (D) is sodium hexametaphosphate which is known as

Permanent hardness of water can be removed only by chemical methods. Sodium hexametaphosphate is commercially called……………………..

How is sodium hexametaphosphate useful in removing the permanent hardness of water?

Polyphosphates llike sodium hexametaphosphate (calgon) are used as water softening agents because they

The trade name of sodium hexametaphosphate is_____.

The trade name of sodium hexametaphosphate is_____.