Sheet Extraction ODD EVEN ODD EVEN GROUP Single Extraction 1 Single Extraction 2 Multiple Extraction 1 Multiple Extraction 2 Weight of tea leaves 10.002 (g) 10.123 (g) 10.013 (g) 10.007 (g) Weight of evaporating dish + caffeine 123.689 (g) 124.334 (g) 121.815 (g) 126.523 (g) Weight of empty evaporating dish 123.513 (g) 124.147 (g) 121.614 (g) 126.246 (g) Weight of caffeine 1. Identify the two layers in the procedure. In which part does caffeine can be extracted? 2. The partition coefficient K for a compound between dichloromethane and water is determined to be 56 : 1 (K=56). If 10.0 mg of the compound is dissolved in 50.0 mL of water and this solution extracted with 25.0 mL of dichloromethane, how many mg of the compound will remain in the water layer following the extraction procedure? Show you calculations
Date Sheet
|
Extraction |
ODD |
EVEN |
ODD |
EVEN GROUP |
|
Single Extraction 1 |
Single Extraction 2 |
Multiple Extraction 1 |
Multiple Extraction 2 |
|
|
Weight of tea leaves |
10.002 (g) |
10.123 (g) |
10.013 (g) |
10.007 (g) |
|
Weight of evaporating dish + caffeine |
123.689 (g) |
124.334 (g) |
121.815 (g) |
126.523 (g) |
|
Weight of empty evaporating dish |
123.513 (g) |
124.147 (g) |
121.614 (g) |
126.246 (g) |
|
Weight of caffeine |
|
|
|
|
1. Identify the two layers in the procedure. In which part does caffeine can be extracted?
2. The partition coefficient K for a compound between dichloromethane and water is determined to be 56 : 1 (K=56). If 10.0 mg of the compound is dissolved in 50.0 mL of water and this solution extracted with 25.0 mL of dichloromethane, how many mg of the compound will remain in the water layer following the extraction procedure? Show you calculations
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