Question:
A sample of hard water contains 2 mg CaCl₂ and 2 mg MgCl2
Last updated: 7/9/2022
A sample of hard water contains 2 mg CaCl₂ and 2 mg MgCl2 per liter. Calculate the hardness of water in terms of CaCO3 present in 106 parts of water. Molar mass of CaCl2 - 111 g mol-¹, MgCl2 - 95 g mol-1 and CaCO3 - 100 g mol-1. 1.95 ppm 2.50 ppm 3.90 ppm 125 ppm