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1. The solubility of compound A in ethanol is 0.82g per 100.0mL at 0oC and 5.10g...

1. The solubility of compound A in ethanol is 0.82g per 100.0mL at 0oC and 5.10g per 100.0mL at 78oC. What is the minimum amount of ethanol needed to recrystallize a 12.50g sample of compound A? (Show your work clearly and remember to use correct sig. figs.) How much would be lost in the recrystallization, that is, would remain in the cold solvent? (Show your work clearly and remember to use correct sig. figs.)

Solutions

Expert Solution

maxium amount of ethanol needed = 12.50 x 100 / 5.10

                                                   = 245. mL

maxium amount of ethanol needed = 245. mL

lost in the recrystallization = 245. x 0.82 / 100

                                       = 2.01 g

queen_honey_blossom answered 2 years ago
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