Sorry i have another question at 0:53~1:54 Why take out the solution and put it in the oven? Eventually, we'll put it back in the funnel, shake it, and separate the layers of water, right? And 4:40 can we use rotary vacuum evaporator for hexane evaporation?? Thank you very much for your kindness
@doodo8710 Жыл бұрын
why titration process is neeeded? can we use the unsaponified oil directly for use (ex, cosmetics?)
@MicroChemsExperiments Жыл бұрын
You can
@호우-h4j Жыл бұрын
1:54, is dry process needed? can i using the extract directly not dry in oven?
@MicroChemsExperiments Жыл бұрын
No. You can skip that
@Lazy131367 ай бұрын
Why use 0.5m( Koh) and 10%ethanol washing plz tell function of this
@MicroChemsExperiments7 ай бұрын
We will upload video later on this topic explaining function
@jevbenikoro1684 Жыл бұрын
The constant used, is it 0.282 or 0.292 ??
@muhammadomar7482 Жыл бұрын
We heat the extracted hexane layer in oven at 90°C for 90 mins but hexane remains in the beaker. How long should we heat it ...?
@MicroChemsExperiments Жыл бұрын
Dry until the constant weight is achieved.
@edahyphen Жыл бұрын
Some papers stated that titration vol should not exceed 0.1ml, if not u must repeat the test, what does it mean by this?
@MicroChemsExperiments Жыл бұрын
It means that titration volume must be greater than 0.5ml. If it is less than 0.5ml then the result will not be accurate because of the lower volume.
@muhammadomar7482 Жыл бұрын
And also can we evaporate the extracted hexane layer on hot plate to save time ...? Will it effect the final result ...?
@MicroChemsExperiments Жыл бұрын
Drying on hot plate lead to loss of the extracted matter
@muhammadomar7482 Жыл бұрын
How many washing have you done for the removal of KOH ...? Please guide ...
@MicroChemsExperiments Жыл бұрын
Wash till the colour remain colourless after adding phenolphthalein to the washing water.
@alibhutta2799 Жыл бұрын
Can we used 10% ethanol to remove KOH instead of water bcz it's clearing easy
@MicroChemsExperiments Жыл бұрын
Yes. You can use
@911eda2 Жыл бұрын
The final residue is so yellow in colour, any suggestion so that it is easier to judge at the titration step
@MicroChemsExperiments Жыл бұрын
Pink colour will be identified easily in the titration. Yello solution should not affect on pink
@cheminblack35832 жыл бұрын
Why we add neutralised ethanol to sample? Can't we directly neutralise sample?
@MicroChemsExperiments2 жыл бұрын
We have to neutralise the ethanol only, not sample.
@ezequielcastillozapata31863 жыл бұрын
Hi would like to know why is this parameter important in soaps?
@MicroChemsExperiments3 жыл бұрын
Plzz take help from google.
@ayo7553 Жыл бұрын
Can I use diethyl ether instead of hexane?
@MicroChemsExperiments Жыл бұрын
Yes. You can
@suma21103 жыл бұрын
Can we use instead of hexane petroleum benzene
@MicroChemsExperiments3 жыл бұрын
No. But you can use petroleum ether instead of hexane
@rainaeemulhassan64423 жыл бұрын
Please upload Nickel test by using spectrophotometer.
@MicroChemsExperiments3 жыл бұрын
Okay. We will work on it. Thank you.
@rainaeemulhassan64423 жыл бұрын
@@MicroChemsExperiments thank you
@MicroChemsExperiments3 жыл бұрын
@@rainaeemulhassan6442 You are most welcome
@sinibiju64793 жыл бұрын
Which oil analysed?
@MicroChemsExperiments3 жыл бұрын
Rice bran oil
@patriciapt3 жыл бұрын
Why 0.282?
@MicroChemsExperiments3 жыл бұрын
It is a factor which is used in the calculation of Unsaponifiable matter & Free Fatty Acid, given by AOAC official method.
@ashishshrivastv8375 Жыл бұрын
@microchemsexperiments , I would like you to suggest you that if you don't deep knowledge then just say i am not having deep knowledge if you are answering his question properly. @patriciapt , i am telling you that what is factor 0.282 Its is nothing but molecular wt of oleic acid ( 282)/1000 where 1000 is divided to conversion of mg to gram.
@Titi-je3ff3 жыл бұрын
Cant see the final equatiin because of subtitles in black.
@MicroChemsExperiments3 жыл бұрын
Kasthuri kk, we are sorry for this but exactly in which portion do you face problm? Please mention with video time so that we can find the exact point. We all can see calculation clearly and there no subtitle is used in the calculation part