CaCl_(2) + Na_(2) CO_(3) rarr 2NaCl + CaCO_(3) CaSO_(4) + Na_(2)CO_(3) rarr CaCO_(3) + Na_(2)SO_(4) If hardness is 100 ppm amount of Na_(2)CO_(3) required to soften 10 lt. Of hard water is

CaCl_(2) + Na_(2) CO_(3) rarr 2NaCl + CaCO_(3) CaSO_(4) + Na_(2)CO_(3

1.	CaCl_(2) + Na_(2) CO_(3) rarr 2NaCl + CaCO_(3) CaSO_(4) + Na_(2)CO_(3) rarr CaCO_(3) + Na_(2)SO_(4) If hardness is 100 ppm amount of Na_(2)CO_(3) required to soften 10 lt. Of hard water is
Answer» `2.12` GM `0.10` gm `10.6` gm `1.06` gm ANSWER :D