What is permanent hardness? Explain ion exchange method for the removal of permanent
hardness of water.
Answers
Answered by
5
Answer:
Permanent hardness is hardness (mineral content) that cannot be removed by boiling.
The ion exchange resin can help in removing permanent hardness. Small balls of resins are made having 1-2mm diameter, and it is packed in tubes. The hard water passes through the tube and sodium ions from the resin come off and go into the water n exchange with the calcium ions, thus removing hardness.
Similar questions