The analysis of a water sample produces the following results Ion Milligram per milli- equivalent for the ion Concentration (mg)/L Ca 2+ Mg2+ Na+ K+ Cl- SO 4 2- HCO 3 - 20.0 12.2 23.0 39.1 35.5 48.0 61.0 60 36.6 92 78.2 71 72 122 The total hardness (in mg/L as CaCO 3 ) of the water sample is ________.

GATE Civil Engineering (CE) 2017 Shift 2 Solved Paper

Question : 63 of 65

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The analysis of a water sample produces the following results

Ion	Milligram per milli- equivalent for the ion	Concentration (mg)/L
Ca²⁺ Mg2+ Na+ K+ Cl- SO₄^2- HCO₃^-	20.0 12.2 23.0 39.1 35.5 48.0 61.0	60 36.6 92 78.2 71 72 122

The total hardness (in mg/L as CaCO₃) of the water sample is ________.

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