Education

PROPERTIES OF CARBOXYLIC ACID

by John Michael Ruiz

📚 Main topics

Carboxylic acid propertiesThe demonstration compares the solubility of several carboxylic acids in water and 10% sodium bicarbonate, then examines their reactions with potassium permanganate. 0:00
Solubility testsAcetic, oleic, stearic, succinic, and benzoic acids are tested in water, followed by the same acids in sodium bicarbonate solution. 1:02
Oxidizing agent testSeveral acids are added to potassium permanganate and placed in a hot water bath for two to three minutes. 11:32

✨ Key takeaways

Compare solubilityThe demonstration asks students to compare each acid’s appearance in water with its appearance in sodium bicarbonate; it does not state the results aloud. 9:48
Observe oxidationStudents are asked to compare the reaction rates and identify which acids react most actively with potassium permanganate. 13:45

🧠 Lessons learned

Record observationsThe activity emphasizes observing the test tubes and noting differences across the acids and test conditions. 5:21
Connect structure and reactionsThe lesson frames carboxylic acids as products of aldehyde oxidation, with aldehydes formed through oxidation of primary alcohols. 0:32

🏁 Conclusion/next steps

Submit the activityWrite the observations, answer the questions in the lab guide, and submit the work the following week. 14:54

Solubility in Water Test the solubility in water acetic oleic stearic succinic and benzoic Reaction with 10% Sodium Bicarbonate Solution Action of an Oxidizing Agent on the Carboxylic Group

Transcript excerpt

0:00 hi welcome back to our class in chemistry laboratory today i will be demonstrating to you the activity on the carboxylic acids let us try to know what are the properties exhibited by these carboxylic acids as in the solubility towards water the solubility towards sodium bicarbonate and the action of the carboxylic acids on the oxidizing agents

0:32 now what are these carboxylic acids carboxylic acids are those substances produced when the aldehydes are oxidized so the traceback the aldehydes are oxidized products of alcohols particularly primary alcohols and when these aldehydes are oxidized the carboxylic acids are formed so the raw material in making the

1:02 carboxylic acid is the alcohol so to start with activity we're going to perform first the solubility of the different carboxylic acids towards water we will use 3ml of water as our solvent to the different carboxylic acids

1:48 for the first test tool we are going to add three drops of the acetic acid let's shake it to test whether the

2:20 acetic acid is soluble in water observed the second test tube let us add here the

2:52 oleic acid let's add three drops of this oleic acid to water then let's shake it and i want you to observe what happens

3:25 to the third touch of water let us add the stearic acid again let's add a pinch of the stearic acid and let's shake it whether it dissolves in the water observe what happens

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