QUESTION 7 10 points Save Answer You\'ve been given a mixture of naphthalene, be

Question

QUESTION 7 10 points Save Answer You've been given a mixture of naphthalene, benzoic acid, and KCl, during which of the following steps would benzoic acid be isolated from the other two solidsi? Dissolving the solid in water and vacuum filtrating to isolate solid portion(s Heating the filtrate from option a to evaporate the water Dissolving the solid portion(s) in NaOH and vacuum filtrating to isolate the solid(s) O Taking the filtrate from option c and acidifying it to recrystallize then vacuum filtrating

Explanation / Answer

In option a when solid is dissolved in water then only KCl is soluble and other two solids (benzoic acid and naphthalene) are not soluble in water so they remains as a mixture. In next step when the remaining solid are dissolved in aqueous NaOH then benzoic acid is converted into sodium salt of benzoic acid (PhCOONa) which is soluble in water and can be separated from naphthalene. In option d after acidification it converts back to benzoic acid. So step c and d are for the separation of benzoic acid.

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