DETERMINATION OF COD OF WASTE WATER-Part-1

[@madansettajana]

Tomorrow is my lab sem exam.... Im watching video today at midnight 12😂😂😂😂😂

[@darshantalkies9972]

Same here

[@kadakcm4754]

​@Divya Kumar legend

[@Getfit-369]

Same but I'm watching at 1 30 at night 😂

[@Karishma_seervi_]

Me too

[@sonaliv.n4214]

Me too at 1:45 am 😀

[@K.avya1]

Tomorrow is my lab external exam... Hear I'm at 1:30 am watching all your vedios..😅 Which is related to chemistry lab... THANK YOU SIR🙏🏻

[@Luminouswisdom-g3h]

Well explained sir....!!✨😍🤩

[@maheshpspk4119]

All are watching before the exam👏

[@drchandrasekharn]

Thank you

[@NIKHILN-z7y]

Super sir

[@kannan.r1454]

Thank you for your explanation sir....

[@drchandrasekharn]

Thank you very much for your kind support

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you

[@dhankumarbasnet4795]

Well explained

[@drchandrasekharn]

Thank you very much for your kind support

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you

[@telugustudent439]

Very nice explanation sir

[@drchandrasekharn]

Thank you

[@shikhavarshney2543]

Amazingly explained 👍

[@drchandrasekharn]

Thank you

[@shikhajha4035]

Is there no requirement of COD digestor for the process

[@Manishkumar-u3g3u]

Thank you sir so much

[@suyelaktarmazumder1891]

Sir we need to dilute the H2SO4+ AgSO4 reagent with distill water?? Or directly we can use?

[@telugustudent439]

Sir can you please give to us procedure of cod,bod analysis

[@PriyankaTiwari-tv8lx]

Very nice explanation...thank you for sharing sir

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you

[@Srishtijalal0201]

Sir how to take sample for cod test in a laboratory ... settled water or filtered water passed through 0.45 micron m. ?

[@drchandrasekharn]

Thank you

[@prashantkv8737]

Sir excellence way of teaching!

[@drchandrasekharn]

Thanks and welcome

[@drchandrasekharn]

Thank you Keep watching and inform to all your friends and tell them to watch, learn and subscribe...Ok For any doubts , procedure and Viva questions I will share to ur mail. send me test mail on [e-mail]

[@vungaralamunindra8151]

My lab exam is in hour and I'm watching now 🔥

[@drchandrasekharn]

Thank you

[@snlakshmi2863]

Thank you sir

[@drchandrasekharn]

Thank you so much for your nice feed back and encouragement and for more lecture videos please subscribe my channel

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you

[@vedachinni849]

Sir here u didn't mentioned formula to calculate?

[@mohankumarthoti40]

Excellent sir

[@drchandrasekharn]

Thank you Keep watching and inform to all your friends and tell them to watch, learn and subscribe...Ok For any doubts , procedure and Viva questions I will share to ur mail. send me test mail on [e-mail] study well.....

[@ankitasojitra6518]

and HgSO4 ratio 1:10 approximate 4 mg add into COD reflux tube

[@gowthamis4906]

You made it easy to study the procedure tq so much sir🙏

[@drchandrasekharn]

Thank you Keep watching and inform to all your friends and tell them to watch, learn and subscribe...Ok For any doubts , procedure and Viva questions I will share to ur mail. send me test mail on [e-mail] study well.....

[@faadilshaikh8511]

You are 🐐🐐

[@drchandrasekharn]

Thank you

[@sbudaice3493]

❤

[@kalaivaniramasamy260]

Sir what is the normality of FAS and K2Cr2O7..?

[@sandeepkarne3913]

Are u from sdm if yes reply me back

[@rudrarudresh2727]

​@@sandeepkarne3913 yea

[@adityapai5147]

Thank you sir.

[@internationalvillagers9490]

Can you provide a calculation of TKN metod

[@ashfaqhussain6382]

you are my favorite budda

[@drchandrasekharn]

Thank you God gift

[@HrushikeshMallade-ci4ov]

My lab exam is today 9 am watching video 8:45😅😢😂

[@ankitasojitra6518]

mercury sulphate use to remove chloride interfere from sample

[@poojabohra3926]

Sir will u plss tell ki how to prepare COD acid ??

[@drchandrasekharn]

Which acid?

[@drchandrasekharn]

Thank you 1:1 Water :H2SO4 solution but care full and take the help from the known persons while preparing

[@drchandrasekharn]

Thank you

[@mck....570]

I have exam on 10:30 I'm watching this video at 9:35😂

[@drchandrasekharn]

Thank you

[@bhanu_sangita]

H2SO4 kitane ml Lena hai sir

[@drchandrasekharn]

2 test tubes Thank you

[@nba9604]

Sir is mercury sulphate not needed in this procedure?

[@drchandrasekharn]

Yes required but in this method I have used FAS instead of waste water Hence not required

[@drchandrasekharn]

Thank you Yes required based on the impurities in the waste water

[@drchandrasekharn]

Thank you is definitely required if the waste water contains more contaminants But only for this titration I have taken only one contaminant

[@balakumar4736]

The explanation is good, but handling of the chemicals with mouth is not a good practice ..second after adding all the chemicals needed to put digestion in hot plate and cooling, then titration

[@madhuraganesh8883]

How to prepare waste water in laboratory?

[@drchandrasekharn]

Use dilute FAS solution

[@amarkumar7091]

sir more video of chemistry lab thanks for the video.

[@drchandrasekharn]

Will upload soon Thank you

[@Taabis]

Today is my exam still waching all video in 3hour😂

[@drchandrasekharn]

Thank you

[@Chikaswan]

Sir, I wonder why don't you heat up the water sample before doing the titration? Is it not necessary?

[@drchandrasekharn]

Yes definitely it is required if you have more impurities in the waste water But I have used only one FAS as impurity in waste water for this heating is not required Thank you so much for your nice feed back and encouragement and for more lecture videos please subscribe my channel

[@drchandrasekharn]

Thank you Yes it is necessary if required

[@drchandrasekharn]

Thank you Yes you need to heat if required and the waste water if it contains more contaminants But only for this titration I have taken only one contaminant and which will give the end point without heating.

[@Godsonharry]

Sir What is the reason to heat the sample before titration

[@sahilmannat9388]

After 1 hr my exam will be held on and I'm watching now 😅😅😅😅

[@drchandrasekharn]

Thank you

[@ritvikgm8330]

I watching video 20min before lab exam 😅

[@drchandrasekharn]

Thank you

[@nba9604]

And what reagents can be substitute instead of silver sulphate?

[@drchandrasekharn]

Yes required but in this method I have used FAS instead of waste water Hence not required

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you Silver sulphate is definitely required if the waste water contains more contaminants But only for this titration I have taken only one contaminant

[@nba9604]

What is 1:1 H2SO4 ?

[@drchandrasekharn]

concentrated sulphuric acid diluted with distilled water in the ratio 1:1 Thank you so much for your nice feed back and encouragement

[@drchandrasekharn]

Thank you Mixture of Water and H2SO4 in the ratio 1:1

[@TowardsSuccessPoint]

Equal amount of water and concentrated sulphuric acid

[@powersaisuresh2535]

Sir if inhaled the burned vapours cod mixture what happen sir

[@Subasgar]

Zero safety 🤣

[@drchandrasekharn]

Actually we are using very dilute solutions so ...

[@42ayoo]

pipetting any chemicals by your mouth is not permitted in laboratory process

[@oveyaashree2353]

any bsc biotechnology students ☺️

[@drchandrasekharn]

This is for all science students to determine COD of waste water. Thank you

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you

[@Luminouswisdom-g3h]

Well explained sir....!!✨😍🤩