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In: Chemistry

you want to purify 10g of a compound A that has been contaminated with 0.20g of...


you want to purify 10g of a compound A that has been contaminated with 0.20g of compound B. solubilities in water of the two compounds are given.

compound A - solubility at 20°c= 0.029g/mol, solubility at 100°c= 0.680g/mol

compound B - solubility at 20°c = 0.22, solubility at 100°c = 6.67

a) what volume of boiling water is needed to dissolve 10g of compound A?

b) How much of compound A will remain after cooling to 20°c?

c) what is the maximum amount of compound A that can be recovered in the first crop of this recrystallization?

d) will any compound B crystals form ( will compound B be pure)? show work to explain answer.

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