3 Determination of COD of waste water | Chemistry Lab Experiments | VTU | 14CHEL17

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[@raoufbouchareb2326]

I was really surprised when I saw pipette suction by mouth. That's terrible. Even for the pure H2SO4 poured directly without hand precaution. This is really dangerous and courageous at the same time. Good luck

[@ИннаЗайцева-ы6з]

Iam shocked, never seen that!

[@mr.anonymousbro5156]

Dude that's not a big thing we have been doing the same thing since our +1 classes

[@vasdgod]

That's how chemistry is done in developing countries. I drank cement solution water , dirty water , potassium nitrate and my teeth felt like they are falling. We can't complain cause that's the best lab we can get.

[@mr.anonymousbro5156]

@@vasdgod true bro

[@mr.anonymousbro5156]

@@vasdgod are you doing your engineering bcs cement solution we get in engineering only

[@sokunlehakeem]

What is FAS in the experiment

[@oyundaribaasanbat9928]

pipetting by mouth makes me really uncomfortable

[@aquazoneengineering3556]

COD analysis Video, Please watch and subscribe this channel
ruclips.net/video/L6lQ6rsTNIQ/видео.html

[@lydiacrimson8078]

waste water is simply kept..?. i wanted to know the cod of waste waster...

[@Funtune-e3x]

, 😂😂same here

[@nandamirajkar7466]

Pipetting by the mouth is non advisable. ....Please don't generalise. ...

[@nirmal6362]

No other option as plastic bulbs for pipets cost 20 Rs. So, big universities and colleges cant efford.

[@shoyrana776]

@@nirmal6362 pipette pumps... Use them..

[@ИннаЗайцева-ы6з]

@@nirmal6362 you can use a rubber bulb!!!

[@aquazoneengineering3556]

COD analysis Video, Please watch and subscribe this channel
ruclips.net/video/L6lQ6rsTNIQ/видео.html

[@divyadivine6668]

Pls clearly mention the quantity and normality/molarity of sample and reagents respectively

[@sintushaw9669]

why are you not taking the water sample while experiment?

[@dhanshreenavle2707god]

How can she calculated cod without water sample taken

[@keneirio3398]

at first i thought my earpiece was not working haha

[@abhiadi3944]

Wrong procedure

[@rami01248]

please state the heating condition required

[@Raj_Aranya]

Wrong experiment

[@pruvi626]

In second time titration.. mam u r not used sample why😕😕

[@suryakiran3085]

There is no need of sample in blank titration. 🙂

[@nba9604]

Is silver sulphate and mercuric sulphate not needed??

[@shahzebalam3138]

Don't u have a bubbler?????

[@abhiadi3944]

Pipetting by mouth is wrong procedure

[@aquazoneengineering3556]

COD analysis Video, Please watch and subscribe this channel
ruclips.net/video/L6lQ6rsTNIQ/видео.html

[@divyasandy6916]

Back titration mam

[@aaronmj6968]

Anyone here after SRM?

[@nba9604]

What is 1:1 H2SO4?

[@surajlokhande4750]

How many sample takes

[@dheerus1214]

Plz use pipett bulb

[@payaljoshi2484]

One must use aid of rubber bulb while pipetting.

[@BasicinformationlearningHome]

Madam,
Please explain chemical reaction each step.

[@adamsmabruk5627]

standard what solution ? I mean the solution used for the titration.

[@tropicallies3242]

Mam what is the initial color of EBT

[@MultiKkp]

You are guiding wrong, no reflux is shown here, n H2 so4 is adding quantity is also wrong

[@aquazoneengineering3556]

COD analysis Video, Please watch and subscribe this channel
ruclips.net/video/L6lQ6rsTNIQ/видео.html

[@mirakimiraki]

Without heating ...is it possible to calculate COD?

[@AnishGhimire]

no it is not possible but I think she digested the sample by just looking at it ;)

[@vineetha4853]

We heat the sample

[@suryakiran3085]

Aay
She didn't show the heating part , but she mentioned it ..

[@_.afrazzz._6479]

How to prepare std fas soln?

[@108vigneshrk8]

Thanku mam

[@rakhikatiyar9224]

Thanks mam

[@lvk3168]

Mam, please can you let me know , at the end why did u calculated for 25cm^3??

[@MO-fg2cm]

Waste water quantity was 25 cm3

[@sankarpilla7408]

Mam Instead of ferroin indicator can we use any other indicator