1.

The reaction involved during the removal of temporary hardness of water is:

Answer»

`2CaCl_(2)+(NaPO_(3))_(6)rarrNa_(2)(Ca_(2)(PO_(3))_(6))+4NaCl`
`CaCl_(2)+Na_(2)CO_(3)rarrCaCO_(3)darr+2NaCl`
`MgSO_(4)+Na_(2)Al_(2)Si_(2)O_(8)xH_(2)OrarrMgAl_(2)Si_(2)O_(7)xH_(2)O+Na_(2)SO_(4)`
`Ca(HCO_(3))_(2)overset(Delta)rarrCaCO_(3)+H_(2)O+CO_(2)darr`

Answer :d


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