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A sample of water is found to contain the following impurities per L Ca(HCO3) 162 mg, CaSO4 136 mg, NaCl 500 mg, Mg(HCO3)2 73 mg,

A sample of water is found to contain the following impurities per L Ca(HCO3) 162 mg, CaSO4 136 mg, NaCl 500 mg, Mg(HCO3)2 73 mg, MgCl2 95 mg, KCl 50 mg Calculate (i) The temporary and total hardness of the sample (ii) The amounts of lime and soda needed for softening of 1 L of the sample, if lime is 85 % pure and soda is 98 % pure.

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