A mixture of 5 mL of acetone (boiling point 56 ° C) and toluene (boiling point 111 ° C) was separated by fractional distillation. At the end of the distillation, 2.5 mL of the fraction 1 and 1.6 mL of fraction 2. The percent recovery of toluene is: a.39% b.50% C.32% d.82%

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