(2 pts) You will learn the details about organic acid and bases in your lecture
ID: 713130 • Letter: #
Question
(2 pts) You will learn the details about organic acid and bases in your lecture course, however, you can infer something about the solubility of organic acids and bases from this experiment. Given that benzoic acid is an organic acid and 4-ethyl aminobenzoate is an organic base, use the results from your experiment to answer the following two questions:
Will an organic acid be induced to dissolve in water that has benn acidified (acid added) or basified (base has been added)? Indicate which experimental observation supports your conclusion??
Will an organic base be induced to dissolve in water that has benn acidified (acid added) or basified (base has been added)? Indicate which experimental observation supports your conclusion.??
Explanation / Answer
yes, an organic acid can be induced to dissolve in the water after basification. Adding a base to the organic acid removes the acidic proton from the acid leading to the formation of a sodium salt which is soluble in water.
Ph-COOH + NaOH = Ph-COO-Na+ + H2O
This acid can be generated from the aqueous layer by addition of dilute hydrochloric acid. (experimental observation)
An organic base such as 4-ethyl aminobenzoate can be induced to dissolve in water after acidification. The acid protonates the amine leading to the formation of ammonium salt which is soluble in water.
amine + acid = ammonium salt
This amine can be generated after the addition of a base in the water.( experimental observation)
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