Lab Statement Partition Coefficient

 Essay in Lab Survey Partition Coefficient


Chem 322 Friday

Canton Coefficient (Extraction) Lab for Benzoic Acid solution

Reaction System:


The purpose of this particular laboratory was to demonstrate the difference in separation of Benzoic chemical p in water and Dichloromethane. Also the difference in separating of Benzoic acid in bicarbonate and Dichloromethane. By simply calculating the partition agent for each of these separations, it has become clear right after in the separating of the aqueous and organic and natural layers. Observations & Results:

In all these separations, if the layer had been mixed together and allowed to settle, two distinct layers were formed. The aqueous layer was on top and the organic part was on the bottom. In both equally cases, gaseous pressure was built up inside the separatory direct but in the bicarbonate parting, the gas build up was much greater as a result of reaction providinf carbon dioxide. When ever each item was acessed, a white-colored crystalized framework had created in the erlenmeyer flask. Measurements:

Partition Pourcentage for Water

K =. 36g organic and natural layer as well as. 04 grams water part

K sama dengan 9. 0

Partition Pourcentage for Bicarbonate

K sama dengan. 02g organic layer /. 40g bicarbonate layer

E =. 05


Using this lab, we have learned that the partition agent for benzoic acid may vary greatly according to what the aqueous layer inside the separation can be. For example , Benzoic acid is definitely soluble in dichloromethane while only slightly soluble in water that leads to a large K benefit. In the additional experiment, the benzoic acid solution reacts with all the bicarbonate to form a salt and carbon dioxide. This kind of reaction will keep the product mainly in the bicarbonate layer, as a result leading to a small K worth. These K value for each separation appear sensible, because a substantial K worth means that the majority was in the organic level while a low K benefit means many was in the aqueous layer.