Question

the hard water of a Whale becomes soft on adding washing soda to it.

Answer 1

yes but where is your question???

Answer 2

QUESTION:

THE HARD WATER OF A WELL BECOMES SOFT ON ADDING WASHING SODA TO IT. (GIVE SCIENTIFIC REASONS)

ANSWER:

THE HARD WATER FROM A WELL OR A BORE-WELL BECOMES SOFT ON ADDING WASHING SODA AND WE COME TO KNOW THIS FROM THE LATHER FORMED ON IT. THE HARDNESS OF WATER IS DUE TO THE PRESENCE OF CHLORIDES AND SULPHATES OF CALCIUM AND MAGNESIUM IN IT. Na₂CO₃ IS ADDED TO IT TO SOFTEN SUCH WATER AND MAKE IT SUITABLE FOR USE. THE REACTION WITH Na₂CO₃ CAUSES THE FORMATION OF INSOLUBLE CARBONATE SALTS OF MAGNESIUM AND CALCIUM.