Question

the chemical compound used to soften the hard water is​

Answer 1

Answer:

Calcium hydroxide

please rate me as a brainleist

Answer 2

Explanation:

• Water softening is achieved either by adding chemicals that form insoluble precipitates or by ion exchange. On a small scale, chemicals used for softening include ammonia, borax, calcium hydroxide (slaked lime), or trisodium phosphate, usually in conjunction with sodium carbonate (soda ash).