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A mixture of 200 mmol of Ca(OH)2 and 3...

A mixture of 200 mmol of `Ca(OH)_2 ` and 3g of sodium sulphate was dissolved in water and the volume was made up to 200 mL. The mass of calcium sulphate formed and the concentration of ` OH^(-)` in resulting solution, respectively, are: (Molar mass of `Ca(OH)_2 , Na_2SO_4 " and " CaSO_4` are 74, 143 and `136 g mol^(-1)` respectively, `K_(sp)` of `Ca (OH)_2` is ` 5 xx 10^(-6) ` )

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