Write any two methods of removal of permanent hardness? Give reaction
Answers
Answered by
3
removal of permanent hardness:
(1) by treating with washing soda
reaction: cacl2+na2co3=caco3+nacl (on heating)
(2)ion exchange method
reacttion: naz+ca2+=caz2+nacl
(3)synthetic resins method
(1) by treating with washing soda
reaction: cacl2+na2co3=caco3+nacl (on heating)
(2)ion exchange method
reacttion: naz+ca2+=caz2+nacl
(3)synthetic resins method
Similar questions