Formation Of Esters Lab Report
The Formation Of Esters
Aim: To observe the reactions between ethanoic acid and different alcohols in the preparation of a variety of esters.
Apparatus:
• Bottles containing: glacial Ethanoic acid, Methanol, Ethanol, Propan-1-ol,
• Propan-2-ol, Butan-1-ol, Butan-2-ol and Conc. Sulfuric acid.
• 1g Salicylic acid
• 10 ml Measuring cylinder
• Test tubes
• 250ml Beaker
• One-hole rubber stopper
• 50cm length of glass tubing to fit stopper
• Hotplate
• Safety glasses
Method:
1. Set up a 250ml beaker two-thirds full of hot water on a hotplate. The beaker serves as a water bath
2. Pour 5ml of ethanol into a test tube.
3. Add 2.5ml of glacial ethanoic acid.
4. Add 5 drops of concentrated sulfuric acid to the mixture in the test tube
5. Use a retort …show more content…
Lower the test tube into the water bath. Wait until the reaction mixture starts to bubble slowly. Then continue moderate boiling for about 5 minutes.
7. Allow the test tube to cool for a few minutes. Remove the condenser and carefully smell the odour of the ester formed. (Note: Do not smell directly, but waft the odour towards your nose). Record your observations.
8. Repeat steps 2 - 7 for each of the other alcohols with ethanoic acid.
9. Repeat using 1g of salicylic acid and methanol.
Results:
Table 1: Results of smells obtained from a combination of different alcohols and carboxylic …show more content…
After collecting the results it was found that all the results obtained, except those from methyl ethanoate, 1butyl ethanoate and methyl salicylate were not the expected results. Most of the esters produced had a strong smell similar to nail polish remover or nail polish, with the 2propyl ethanoate and vinegar smelling 1propyl ethanoate actually being expected to smell like pears. The 1butanyl ethanoate followed the expected results smelling like an apple flavour, as well as with methyl ethanoate smelling like the expected nail polish. The methyl salicylate also followed predicted results, producing a deep heat like scent, characterised by its oil of wintergreen
Aim: To observe the reactions between ethanoic acid and different alcohols in the preparation of a variety of esters.
Apparatus:
• Bottles containing: glacial Ethanoic acid, Methanol, Ethanol, Propan-1-ol,
• Propan-2-ol, Butan-1-ol, Butan-2-ol and Conc. Sulfuric acid.
• 1g Salicylic acid
• 10 ml Measuring cylinder
• Test tubes
• 250ml Beaker
• One-hole rubber stopper
• 50cm length of glass tubing to fit stopper
• Hotplate
• Safety glasses
Method:
1. Set up a 250ml beaker two-thirds full of hot water on a hotplate. The beaker serves as a water bath
2. Pour 5ml of ethanol into a test tube.
3. Add 2.5ml of glacial ethanoic acid.
4. Add 5 drops of concentrated sulfuric acid to the mixture in the test tube
5. Use a retort …show more content…
Lower the test tube into the water bath. Wait until the reaction mixture starts to bubble slowly. Then continue moderate boiling for about 5 minutes.
7. Allow the test tube to cool for a few minutes. Remove the condenser and carefully smell the odour of the ester formed. (Note: Do not smell directly, but waft the odour towards your nose). Record your observations.
8. Repeat steps 2 - 7 for each of the other alcohols with ethanoic acid.
9. Repeat using 1g of salicylic acid and methanol.
Results:
Table 1: Results of smells obtained from a combination of different alcohols and carboxylic …show more content…
After collecting the results it was found that all the results obtained, except those from methyl ethanoate, 1butyl ethanoate and methyl salicylate were not the expected results. Most of the esters produced had a strong smell similar to nail polish remover or nail polish, with the 2propyl ethanoate and vinegar smelling 1propyl ethanoate actually being expected to smell like pears. The 1butanyl ethanoate followed the expected results smelling like an apple flavour, as well as with methyl ethanoate smelling like the expected nail polish. The methyl salicylate also followed predicted results, producing a deep heat like scent, characterised by its oil of wintergreen