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RH2(ion exchange resin) can replace Ca2+ ions in hard water, RH2 + Ca2+ RCa + 2H+ 1L of hard water after passing through RH2 has pH = 2. Hence hardness in ppm. of Ca2+ is

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RH2(ion exchange resin) can replace Ca2+ ions in hard water, RH2 + Ca2+ RCa + 2H+ 1L of hard water after passing through RH2 has pH = 2. Hence hardness in ppm. of Ca2+ is






 
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