Questions
Statement-I: Temporary hardness of water can be removed by boiling it.
Statement-II: On heating bicarbonates of Ca2+ and Mg2+ decompose to give insoluble products.
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Correct option is A
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The molecular formula of a commercial resin used for exchanging ion in water softening is C8H7SO3 Na (mol. wt. = 206). What would be the minimum uptake of Ca2+ ions by the resin when expressed in mole per gram resin ?
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