Organic Chemistry: Esterification Lab
Esterification Lab
Introduction
Esterification is an important part of organic chemistry that has many practical applications. Esterification can be used to make polymers. In most cases, esters are used for scents – they often smell fruity and sweet. In general, an esterification reaction results from a condensation reaction between a carboxylic acid and an alcohol. The carboxylic acid group loses an OH group, and the alcohol loses and H. For instance, the reaction between methanoic acid and methanol is shown below
COOH+CH_3 OH →CHOOCH_3+H_2 O
Purpose
The purpose of this investigation is to verify the smell of esters
Method
Place 250 mL of deionized water in a 500 mL. Heat this water until it boils. Turn off the heat source after boiling Follow the chart below for the following steps
Ester # Acid Alcohol
1 Acetic Acid Butanol
2 Acetic Acid Octanol
3 Acetic Acid Methanol
4 Acetic Acid Ethanol
5 Butanoic acid Butanol
6 Butanoic acid Octanol
7 Butanoic acid Methanol
8 Butanoic acid Ethanol
Place tens drops of the acid in your test tube. Add 10 drops of the required alcohol to the test tube. Refer to the chart to check what combination of acids and alcohols you should use Add 2 drops of concentrated sulfuric acid (this increases the yield) Place the test tube into the boiling water so the level of the alcohol-acid solution is below the level of the water. Allow the test tube to remain in the hot water bat for 15 minutes After 15 minutes, smell the solution and record the smell. Pour the solution down the drain and rinse the test tube with tap water to remove odor. Repeat the above steps for the acid-alcohol combinations you were assigned After this, clean up all materials and wash your hands.
Data
Ester # Acid Alcohol Ester name Smell
1 Acetic acid Butanol Butyl ethanoate Banana/pear
2 Acetic acid Octanol Octyl ethanoate Orange citrus
3 Acetic acid Methanol Methyl ethanoate Nail polish remover
4 Acetic acid
Introduction
Esterification is an important part of organic chemistry that has many practical applications. Esterification can be used to make polymers. In most cases, esters are used for scents – they often smell fruity and sweet. In general, an esterification reaction results from a condensation reaction between a carboxylic acid and an alcohol. The carboxylic acid group loses an OH group, and the alcohol loses and H. For instance, the reaction between methanoic acid and methanol is shown below
COOH+CH_3 OH →CHOOCH_3+H_2 O
Purpose
The purpose of this investigation is to verify the smell of esters
Method
Place 250 mL of deionized water in a 500 mL. Heat this water until it boils. Turn off the heat source after boiling Follow the chart below for the following steps
Ester # Acid Alcohol
1 Acetic Acid Butanol
2 Acetic Acid Octanol
3 Acetic Acid Methanol
4 Acetic Acid Ethanol
5 Butanoic acid Butanol
6 Butanoic acid Octanol
7 Butanoic acid Methanol
8 Butanoic acid Ethanol
Place tens drops of the acid in your test tube. Add 10 drops of the required alcohol to the test tube. Refer to the chart to check what combination of acids and alcohols you should use Add 2 drops of concentrated sulfuric acid (this increases the yield) Place the test tube into the boiling water so the level of the alcohol-acid solution is below the level of the water. Allow the test tube to remain in the hot water bat for 15 minutes After 15 minutes, smell the solution and record the smell. Pour the solution down the drain and rinse the test tube with tap water to remove odor. Repeat the above steps for the acid-alcohol combinations you were assigned After this, clean up all materials and wash your hands.
Data
Ester # Acid Alcohol Ester name Smell
1 Acetic acid Butanol Butyl ethanoate Banana/pear
2 Acetic acid Octanol Octyl ethanoate Orange citrus
3 Acetic acid Methanol Methyl ethanoate Nail polish remover
4 Acetic acid