Answer:
89,4%
Explanation:
If you have a solutio of 2,5g of acetanilide in 50mL of water and you warm this solution to 100°C you will dissolve all acetanilide because the maximum solubility in 50mL will be:
5,5g / 100mL → 2,75g / 50mL.
Then, if you cold the water to 0°C the solubility in 50mL will be:
0,53g / 100mL → 0,265g / 50mL.
That means you will precipitate:
2,5g - 0,265g = <em>2,235g of acetanilide</em>
The theoretical percent recovery will be:
2,2365g / 2,5g ×100 = <em>89,4%</em>
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I hope it helps!
