Carboxylic Acids and Their Derivatives. Laboratory Report
Carboxylic Acids and Their Derivatives
Ma. Marielle M. Medura
Prof. Emma Boncales
Chem 23A
(TTH 01:00-4:00 p.m)
Carboxylic Acids and Their Derivatives
I. Introduction
Carboxylic acids is an organic compound that contains a carboxylic group(-COOH). Its general formula is R-C=OOH with R referring to the rest of the molecule such as H and C. They are directly attached to a carbonyl group and the interaction between them affects the reactions of each. The polarity of the O-H bond is greatly increased and the tendency to release a proton that cause the acidity that would be higher than the alcohols and phenols. The melting and boiling point of carboxylic acids are higher than the Hydrocarbons and oxygen that contains compounds of comparable size and shape and indicate a strong molecular attractive force.
The carboxylic acids with up to four carbon atoms will mix with water in any proportion. When you mix the two together, the energy released when the new hydrogen bonds form is much the same as is needed to break the hydrogen bonds in the pure liquids. The solubility of the bigger acids decreases very rapidly with size. This is because the longer hydrocarbon "tails" of the molecules get between water molecules and break hydrogen bonds. In this case, these broken hydrogen bonds are only replaced by much weaker van der Waals dispersion forces. The energetics of dissolving carboxylic acids in water is made more complicated because some of the acid molecules actually react with the water rather than just dissolving in it. This is the basis for the acidity of these compounds.
The functional derivatives of the carboxylic acids are compound that had the capability to hydrolize it; include the following examples:
In view to this, an experiment was conducted with the following objectives: to be able (1) to determine the acidity of carboxylic acids; (2) to distinguish a carboxylic acid in another compound through its solubility; and (3) to recognize the
Ma. Marielle M. Medura
Prof. Emma Boncales
Chem 23A
(TTH 01:00-4:00 p.m)
Carboxylic Acids and Their Derivatives
I. Introduction
Carboxylic acids is an organic compound that contains a carboxylic group(-COOH). Its general formula is R-C=OOH with R referring to the rest of the molecule such as H and C. They are directly attached to a carbonyl group and the interaction between them affects the reactions of each. The polarity of the O-H bond is greatly increased and the tendency to release a proton that cause the acidity that would be higher than the alcohols and phenols. The melting and boiling point of carboxylic acids are higher than the Hydrocarbons and oxygen that contains compounds of comparable size and shape and indicate a strong molecular attractive force.
The carboxylic acids with up to four carbon atoms will mix with water in any proportion. When you mix the two together, the energy released when the new hydrogen bonds form is much the same as is needed to break the hydrogen bonds in the pure liquids. The solubility of the bigger acids decreases very rapidly with size. This is because the longer hydrocarbon "tails" of the molecules get between water molecules and break hydrogen bonds. In this case, these broken hydrogen bonds are only replaced by much weaker van der Waals dispersion forces. The energetics of dissolving carboxylic acids in water is made more complicated because some of the acid molecules actually react with the water rather than just dissolving in it. This is the basis for the acidity of these compounds.
The functional derivatives of the carboxylic acids are compound that had the capability to hydrolize it; include the following examples:
In view to this, an experiment was conducted with the following objectives: to be able (1) to determine the acidity of carboxylic acids; (2) to distinguish a carboxylic acid in another compound through its solubility; and (3) to recognize the
References: William,Reusch.(2013). Carboxylic Acids. Retrieved on February 20, 2015 from https://www2.chemistry.msu.edu/faculty/reusch/virttxtjml/crbacid1.htm Neuman, Robert.(1994). Carbonyl Compounds: Ketones, Aldehydes, Carboxylic Acids From Organic Chemistry. pp.13.7- 13.9.