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An aqueous solution containing 0.25 moles of a strong electrolyte A in 500 g of water freezes at -2.8^(@)C. How many ions are formed per formula unit of A (K_(f)=1.86^(@)C) ? |
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Answer» 1 `DeltaT_(f)` (OBSERVED) `= iK_(f) XX m` `2.8= ixx 1.86 xx 0.50` or `i=(2.8)/(1.86 xx 0.50)=3` |
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