Today, I have an online lecture on the synthesis of Schiff base on Google meet, The last lecture was on campus in which we synthesize oxalic acid from Sucrose, Our group performed it and showed results after the experiment to the instructor and appreciated our efforts, the percentage yield was 62.68℅. Mam instructed us to share calculations in the class group. Later we shared it. At 11 am this morning lecture began and we learned well about Schiff base synthesis theoretically and forthwith the time is to perform practically in the lab. Safety gloves, lab Coats are compulsory to bring because the chemical we are using in our experiments are concentrated, can induce havoc.

Apparatus:

Beaker, conical flask, measuring cylinder, pipette, filter paper petri dish, weight balance.

Chemicals Required:

Ethanol, Acetic acid, Benzaldehyde, Ice Chilled Water.

Procedure:

Initially, we will weigh out Ethanol of 10ml using a measuring cylinder with the help of a pipette then pour it into the Conical flask. Similarly, weigh out benzaldehyde 4-5 ml and pour into the same conical flask, Mix it well,

Our instructor showed us virtually how should we put ethanol and benzaldehyde in a conical flask. Next, we will mix it well and put it in the water bath for heating. We will constantly heat and stir it well with a temperature of 60-70° till 30-minutes, Precipitates will be observed in the conical flask.

Our Instructed tried their best to show us how the Schiff base is synthesized but when we will perform physically in the lab, then confusion will be more clear. The instructor showed us a video in which practically they showed. More dense crystals are formed because they utilized more quantity of aniline. But in a university lab chemicals are used in small quantities for just understanding of the students. In this case, we will use ethanol to wash out the crystals.

After 30 minutes of constant heating and stirring when crystals are formed we will filter out these crystals using the filter paper by the filtration process. Precipitates are obtained on the covering of filter paper. Next, dry out and calculate the percentage yield. The Theoretical yield was obtained from the balanced chemical equation.

The actual yield will be obtained after experimenting, The percentage yield is :

%age yield = Actual yield/ Theoretical yield

All the screenshot used is taken from the live lecture on Google Meet. And the lead image is captured by me, of my register on which I write the things that I understand in the whole lecture.