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Pre-laboratory Questions 1. Although it is a less efficient solvent for this extraction, why is 2-propanol used in this extra
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1) In Extraction Process Caffiene is more soluble in 2- Propanol than chloroform or methyl chloride here the organic layer will be 2-propanol and the aqueous layer will be salt water.

2) Disodium salt of Carbonic acid is Sodium Carbonate. It has the alkanizing tendency. Sodium Carbonate when dissolved in water gives Sodium hydroxide and Carbonic acid as the products.

3) Comparitively CHCl3 and CH2Cl2 , 1 - Propanol is least capable of extracting, the productivity can be increased by adding NaCl to water. As a result the polarity of the water and Ca(OH)2 raised up. So that the Solution will become basic. And also Caffiene gets easily solvated in 1 - propanol, because of its minimal polarity.

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