Questions (you may use the back of the page if you need more room to answer) 1.

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Questions (you may use the back of the page if you need more room to answer) 1. (3 points) Describe three properties of good organic extraction solvents 2. (3 points) Evaluate the purity of each isolated product by comparing the observed melting point to the literature value. 3. (4 points) When oxidizing benzyl alcohol to benzaldehyde, a common side product is benzoic acid, caused by overoxidation of benzaldehyde. Explain how benzaldehyde might be separated from benzoic add impurity. Benzyt alcohol, benzaldehyde, and benzoic acid are all soluble in ether and only slightly soluble in water.

Explanation / Answer

1.A good extracting solvent should be having low polarity,non-toxic,non-flammable,having good solubility for the target compounds and volatile, having poor solubility for impurities

2.It should be from your experimental results.compare melting point of your readings with melting point of pure compounds

3.Simple bicarbonate treatment of benzaldehyde should remove any benzoic acid present to the feed Benzaldehyde.Addition of oxygen scavenger to the feed Benzaldehyde will also help to diminish the formation of benzoic acid.

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