Check sibling questions

Q.) Name the sodium compound which is used for softening hard water.

 

Answer:

 

Washing Soda (Na 2 CO 3 .10H 2 O) is the sodium compound which is used for softening hard water.The carbonate ions (CO 3 2- ) ions in washing soda react with calcium ions in hard water and remove them as insoluble calcium carbonate thus softening the hard water.

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo