1. at gure 2 in ONS What does this the ure section. the the layers the separator

Question

1. at gure 2 in ONS What does this the ure section. the the layers the separatory say about the relative densities of the water and the funnel. 2. What gives tea its brownish color? 3. How does adding the anhydrous sodium sulfate to the dicaloromethane solution remove water? (Hint: Refer to Experiment 4. If the above step was omitted in the isolation procedure, how would this be reflected in the yield calculation 5. A student used 8.23 g of tea leaves in the How much caffeine is expected assuming all the caffeine is extracted? (Hint: See the Background section)

Explanation / Answer

If the above step was omitted in the isolation procedure which is the removal of the water using Na2SO4 anhydrous solid, then the water will not be removed from the dichloromethane layer and the compound will contain water as impurity and therefore the yield will be higher as water is in the compound as impurity.

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