The column below was used to soften hard water

      

The column below was used do soften hard water
scheme42120171106.jpg
i) Explain how the hard water was softened as it passed through the column.
ii) After sometimes the material in the column is not able to soften hard water. How can the material be reactivated?

  

Answers


John
i) The Ca2+, Mg2+ ions in water are exchanges with Na+ ions in the permutit

ii) By passing a solution of concentrated sodium chloride through the column
johnmulu answered the question on April 21, 2017 at 08:10


Next: The scheme below shows some reaction sequence starting with solid N.
Previous: Study the flow chart below and answer the questions that follow

View More Chemistry Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions