SAQ : What is deionized water? How will you prepare deionized water from a sample of hard water?

Question

What is deionized water? How will you prepare deionized water from a sample of hard water?

Answer

Deionized water is water that has had its mineral ions, such as calcium, magnesium, sodium, and chloride, removed through a process called deionization.

To prepare deionized water from a sample of hard water, you can use an ion exchange process. Here’s a simplified explanation:

1. Pass the hard water sample through an ion exchange resin, in a column or tank.
2. The resin selectively binds and removes the mineral ions from the water, exchanging them with hydrogen (H⁺) or hydroxide (OH^–) ions.
3. Continue passing the water through the resin until the desired level of deionization is achieved.
4. Collect the deionized water that has been stripped of mineral ions.