Questions
Statement I: Hard water does not give lather with soap
Statement II : In hard water, the sodium stearate of soap changes to the corresponding calcium magnesium salt which precipitates out
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Correct option is A
The hard water does not gives lather with soap solution, due to the presence of ↑ soluble Ca & Mg saltsThose are Mg(HCO3)2 MgCO3 Ca(HCO3)2 CaCO3The sodium stearate of soap reacts with these salts and converting into insoluble (PPT) calcium and magnesium stearate. Statement I and Statement II are true.Similar Questions
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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