(Answered) Q 1 water contains following impurities in ppm cahco32 75

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Q. 1: Water contains following impurities in ppm: Ca(HCO₃)₂ = 75 ppm, Mg(HCO₃)₂ = 73ppm, CaCl₂ = 95 ppm, MgSO₄ = 30 ppm, CO₂ = 20. Calculate the amount of lime (85%pure) and Soda (95% pure) require for softening of 2,50,000 litres of water using sodiumaluminate as a coagulant at the rate of 16.4 ppm.

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