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Calcium ion concentration in hard water

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The Ca2 + ion of the hard water is often precipitated in the form of CaCO3 by the addition of soda, Na2CO3. If the calcium ion concentration in hard water is 0.01 mol / L, and if Na2CO3 is added until it has a 0.05 mol / L concentration for the carbonate ion, what percentage of the calcium ion will have been removed from the water ? Ignore the hydrolysis of the carbonate ion. (Data: CaCO3 Kps = 3,8.10-9).

Reference no: EM132542960

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