You need to separate a mixture of caffeine and benzoic acid. The sample has an initial...

You need to separate a mixture of caffeine and benzoic acid. The sample has an initial weight of 2.00 g and a content of 25.0% caffeine. You use dichloromethane, 10.0% NaOH solution, and 10.0% HCl. You are able to isolate 0.60 g caffeine and 1.00 g benzoic acid. Complete the following calculations and show your work.

i)Calculate the amounts of caffeine and benzoic acid in the initial sample.

ii) How much 10% NaOH solution would be needed to neutralize all benzoic acid?

·iii) How much drying agent, MgSO₄, would be needed for drying of 20mL dichloromethane solution that contains 0.01% water, knowing that each mole of MgSO₄ can absorb 7 moles of H₂

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queen_honey_blossom answered 1 year ago

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