A sample of water has ppm of . Its hardness in terms of is: — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

Molecular weight $MgSO_4 = 120$, $CaCO_3 = 100$. <br>Hardness = $(\text{mass of salt} / \text{Mw of salt}) \times \text{Mw of } CaCO_3$. <br>Hardness = $(10 / 120) \times 100 = 100/12 = 8.33$ ppm. [9, 10]