Flashcards
Drying the Organic Product + redistillation
Cards in this deck (12)
- 1Why is this necessary?Because there may still be some water left in the organic product.
- 2What is a drying agent?An anhydrous inorganic salt that readily takes up water to become hydrated
- 3Drying agent for drying hydrocarbons?CaCl2
- 4General drying agentsCaSO4
MgSO4 - 5Step 1.Add organic liquid to a conical flask.
- 6Step 2.Using a spatula add some of the drying agent to the liquid and gently swirl the contents to mix together.
- 7Step 3.Place a stopper on the flask to prevent product from evaporating away.
Leave for 10 minutes. - 8Step 4.If solid has clumped, then there is still some water present. Add more drying agent until solid is dispersed in solution as a fine powder.
- 9Step 5.Decant the liquid from the solid into another flask. If the liquid is dry it should be clear.
- 10When is redistillation necessary?If organic liquids have bpt similar then sample may still contain some organic impurities.
- 11Step 1.Clean out distillation apparatus and set up to carry out a second distillation
- 12Step 2.Carry out second distillation, using a narrow boiling range that matches the boiling point of the compound of interest.
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- User has deleted their subject information Flashcards on Drying the Organic Product + redistillation, created by Deleted user on 09/06/2018.
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- Deleted user · Jun 2018
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- Jun 9, 2018
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- Created by josephw weetch · Jun 9, 2018
- Copied by josephw weetch · Jun 9, 2018
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