Unformatted text preview: extraction? 4. Why will ether in the aqueous extract impede the formation of crystals during the neutralization of the acid/base? 5. Which purification technique will you use at the end of lab today to purify caffeine? How will you measure the melting point since the sublimation point of caffeine is lower than the melting point at atmospheric pressure? 6. What precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid?...
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- Summer '05
- Organic chemistry, Solvent, Diethyl ether