You are given a mixture containing 2 compounds: A and B. Both compounds have a s

Question

You are given a mixture containing 2 compounds: A and B. Both compounds have a solubility of 1 g/100 mL of solvent at 20 degrees celsius and 16 g/ 100 mLof solvent at 100 degrees celsius. The sample is composed of 3.5g of A and 10 g of B. At 100 degrees celsius, the entire sample just dissolves in a minimum amount of solvent. The solution is cooled to 20 degrees and crystals are collected.

a) Calculate the composition of crystals and the yield process

b) What is the composition of the mother liquor?

c) If the crystals obtained are recrystalized from 100 mL what will the yield and composition be?

Explanation / Answer

First, calculate the minimum volume of solvent needed to dissolve both at 100

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