Answer to Question #189034 in Organic Chemistry for ECATERINA ILCIUC

Question #189034

Solubilitatea acetanilidei în apă fierbinte este 5,5 g/100 mL la 100oC iar solubilitatea în apă rece la 0oC este 0,053 g/100 mL. Care ar fi procentul maxim teoretic de recuperare a acetanilidei prin cristalizarea a 5 g de acetanilidă din 100 mL apă presupunând că soluţia este răcită la 0oC. 


1
Expert's answer
2021-05-04T14:16:30-0400

If the solubility of acetanilide is 0.45g per 100 mL of water at 0°C and you filtered your solution at

this temperature, you can calculate g of acetanilide by the next proportion

If 0.45 g of acetanilide dissolves in 100 ml

so x g of acetanilide dissolves in 19 ml

So we can calculate remaining acetanilide in solution

0.45 - 100 ml

X - 19 ml

X = 0.45 × 19 / 100 = 0,0855 g

So 0,085 g of acetanilide remaining in solution.


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