DETERMINATION OF COD OF WASTE WATER-Part-1

This video explain about 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 😀

[@kavya.y.m4836]

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🙏🏻

[@maheshpspk4119]

All are watching before the exam👏

[@drchandrasekharn]

Thank you

[@kannan.r1454]

Thank you for your explanation sir....

[@drchandrasekharn]

Thank you very much for your kind support

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

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[@shikhavarshney2543]

Amazingly explained 👍

[@drchandrasekharn]

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[@dhankumarbasnet4795]

Well explained

[@drchandrasekharn]

Thank you very much for your kind support

[@drchandrasekharn]

Thank you

[@drchandrasekharn]

Thank you

[@sahilmannat9388]

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

[@drchandrasekharn]

Thank you

[@telugustudent439]

Very nice explanation sir

[@drchandrasekharn]

Thank you

[@vungaralamunindra8151]

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

[@drchandrasekharn]

Thank you

[@PriyankaTiwari-tv8lx]

Very nice explanation...thank you for sharing sir

[@drchandrasekharn]

Thank you

[@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]

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[@sbudaice3493]

❤

[@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]

[@faadilshaikh8511]

You are 🐐🐐

[@drchandrasekharn]

Thank you

[@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.....

[@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.....

[@suyelaktarmazumder1891]

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

[@ashfaqhussain6382]

you are my favorite budda

[@drchandrasekharn]

Thank you God gift

[@adityapai5147]

Thank you sir.

[@ankitasojitra6518]

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

[@ankitasojitra6518]

mercury sulphate use to remove chloride interfere from sample

[@telugustudent439]

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

[@vedachinni849]

Sir here u didn't mentioned formula to calculate?

[@mck....570]

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

[@drchandrasekharn]

Thank you

[@Taabis]

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

[@drchandrasekharn]

Thank you

[@ritvikgm8330]

I watching video 20min before lab exam 😅

[@drchandrasekharn]

Thank you

[@shikhajha4035]

Is there no requirement of COD digestor for the process

[@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

[@user-dx7bj4qz8w]

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

[@kalaivaniramasamy260]

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

[@sandeepkarne3913]

Are u from sdm if yes reply me back

[@rudrarudresh2727]

​@@sandeepkarne3913 yea

[@amarkumar7091]

sir more video of chemistry lab thanks for the video.

[@drchandrasekharn]

Will upload soon Thank you

[@internationalvillagers9490]

Can you provide a calculation of TKN metod

[@HrushikeshMallade-ci4ov]

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

[@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

[@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

[@madhuraganesh8883]

How to prepare waste water in laboratory?

[@drchandrasekharn]

Use dilute FAS solution

[@bhanu_sangita]

H2SO4 kitane ml Lena hai sir

[@drchandrasekharn]

2 test tubes
Thank you

[@powersaisuresh2535]

Sir if inhaled the burned vapours cod mixture what happen sir

[@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.

[@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

[@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

[@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

[@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