Aim To determination the partition coefficient of ethanoic acid between water and butan-2-ol.
Experiment18
Aim
To determination the partition coefficient of ethanoic acid between water and butan-2-ol.
Procedure
- The room temperature was recorded.
- 15cm3 of the given aqueous ethanoic acid and 15cm3 of butan-2-ol were poured into a 100cm3 separating funnel, using suitable apparatus. The funnel was stoppered and was shook vigorously for 1 to 2 minutes. (The pressure in the funnel was released by occasionally opening the tap.)
- 10cm3 of each layer was separated approximately. (The fraction near the junction of the two layers was discarded.)
- 10.0cm3 of the aqueous layer was pipetted into a conical flask and was titrated with 0.1 M sodium hydroxide solution using phenolphthalein.
- Using another pipette, 10.0 cm3 of the alcohol layer was delivered into a conical flask and was titrated with 0.1 M sodium hydroxide solution.
- Steps (2) to (5) was repeated with another separating funnel using the following volume: