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What is the purpose of the following?
a) Adding CaCl2 to the extracted organic layer in extraction technique
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- After separating layers in an extraction, it is necessary to “dry” the organic layer with a substance that absorbs water. Explain why this is necessary.Why is it required to add drying agent like sodium sulphate to the organic layer which may contain only a neutral compound? Explainwhy should a small volume of the cold solvent be used for rinsing the pure crystal? (recrystalization)
- Organic Chemistry Laboratory purposes: a. Why is it important to vent the separatory funnel (directed away from your face and body) after vigorous shaking? b. What is an disadvantage of using too little drying agent?What is the benefit of using fluted filter paper instead of not folding it?Briefly, discuss reflux and why it is commonly used in organic chemistry.