TRICK TO SOLVE NMR PROBLEM IN JUST MINUTE| COMPLETE SOLUTION-Revised edition in hindi.

NMR PROBLEM SOLUTION-Revised edition in hindi.
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This video contain NMR PROBLEM SOLUTION in tricky way must watch entire video definitely you will be able solve HNMR problems within two minutes.Join Sayyed Academy for all latest update and explore chemistry in easy way.
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Please watch: "NMR SPECTROSCOPY-THEORY/FROM BASICS (PART-1) IN HINDI/URDU"
• nmr spectroscopy theor...
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[@dr.rajnikantmardia6145]

Very nice NMR tricks sir. But I want to tell something. Hydroxy -OH proton chemical shift is not fix. It depends on intermolecular hydrogen bonding means indirectly on concentration. Sites of unsaturation should be represented with significance. It should be presented with index of hydrogen deficiency with respect to elements and bonds with rings. So it will be more correlated in structural elucidation. In the last, different types of methyl proton chemical shifts are presented in which methyl group attached to double bonded carbon called as allylic methyl group having allylic protons. Allylic methyl protons are having chemical shift 2.1 - 2.2. Respective methylene CH2 and Methine CH protons chemical shifts should be correlated with methyl protons. Means methylene protons are having higher value. Approx +0.3 with comparision to respective methyl protons. Methine protons are having higher value approx +0.3 with comparision to respective methylene protons. If methylene and methine protons chemical shifts are correlated with methyl protons then it will be more interested and useful for strucure confirmation. Thank u

[@alischemistry]

Thank you so much for sharing your precious knowledge..🙂🙂🙂

[@StoikiyMuzhikK]

very helpful best teacher for nmr problems well taught in way easy to comprehend... sach batata huun sir 30-40 saal experience wale premier Institute k teacher bhi intni easy language me nmr problems nahi padha sakte.. jo technique aur problem solving me iss 30 minutes me sikha huun vo un teachers k 6-7 lectures me b nai samaj paya tha.. Very helpful content... GOD BLESS YOU SIR

[@alischemistry]

Thankz😊 for your kind appreciation.Not only nmr video u can also watch other video they r too helpfull and must share to all your Chemistry colleagues..

[@soumyamuttagi]

Now I am much more confident !!😊

[@abcdname579]

Mujhe aaj tak kisi ne etna aacha nhi sikhaya... Or ha this is my first comment on KZbin! Thank uh so much

[@alischemistry]

Thank you brother 🙂 Must share to all your chemistry groups and frds☺️

[@abcdname579]

@@alischemistry sure🙂

[@sreemotichatterjee4345]

Thank you so much sir for assembling the tricks and lucidly explaining them in a nutshell.

[@alischemistry]

Thank u so much for your kind apreciation..☺️🙏

[@rutujak3935]

Very excellent explanation very easy to understand thank you 👌

[@priteshwankhede9975]

Very helpful. I am preparing for the university exam. Thank you.. 🙏

[@alischemistry]

All the best

[@devils666saurabh8]

Thanku sir very helpful this video for me 7 marks save for me 🤗

[@PramodGupta-gq6tc]

Your video is great

[@SafdarHussain-cn3fr]

very easy method to understand doublet....., ..

[@alischemistry]

Glad to hear that

[@vijayamaurya2991]

at 3:09 3rd CH2 gives (n+1)*(m+1) so ch2 have (2+1)*(3+1)=12 .that is multiplet. becoz this CH2 is in different environment.

[@alischemistry]

Vijaya Maurya @ Yes mam agree with u it is multiplet but we can call it sextet too.. Refference(Pavia).

[@DrRBMore]

Excellent sir, Its really helpful to chemistry students.

[@alischemistry]

Thank you mam👍🙏

[@hiranmayeeduttasardar9961]

Thank u so much sir,,please upload video tricks on IR.. And what types of questions can come in exams from Uv-visible spectra ..

[@abrarstudentiala.u.h.s9262]

very good and easy method of teaching helped me alot thak you sooooo much

[@alischemistry]

thank u Abrar sir☺️

[@destinylife467]

F nmr and P nmr ki upar ak video baanai ne with good example. Sir. Nice video

[@alischemistry]

monish pandey @ohk done bro..we will make video on it not yet but soon..

[@selvamk7562]

Good teaching & godbless you👍

[@alischemistry]

Thank u so much for your kind appreciation..😊

[@shubhammahajan7228]

29.13 C3H6Brl example galat hei sir ch3 ko dono side se bond kaise lagega 🤔 But explantation is good Thanks you so much 😇

[@alischemistry]

@shubham Mahajan Your are right! the problem is not wrong actually its mistakenly written by me so its typographical error . Thank you so much for watching full video with 100 % concentration🙂.

[@shivamtripathi7518]

Ch3-ch2-ch2ch3 ,multiplicity of methylene group will be quartet but not sixet its signal will split only by adjacent not equivalent three methyl hydrogens only so its multiplicity should be quartet.plse clear my doubt

[@29monir]

Very easy understanding 😊❤ thanks.

[@alischemistry]

Glad to hear that😊👍🙏

[@gracefulheart7910]

Kya baat hai ALI bhai. Maa sha ALLAH !

[@rockychem9045]

excellent video .sir thanx for it .upload many more such video

[@Mjvlogs2011]

Sir ekdam mst very easy trick 👌👌👌👌

[@alischemistry]

Kindly share to your all chemistry collegues👏🙂

[@nikitapawar8545]

It's work's very nice👍

[@alischemistry]

Thank u so much..u can support us giving thanks😊🙏👍

[@simranvasir1443]

Sir i m having problem in using delta value...i am not getting how use for OH OR for ny other functional group? Plz help me

[@alischemistry]

simran kaur @ U should have to remember all NMR values..like aldehyd,ketone ,acids,alcohol etc.

[@exambreakers6347]

You are so good sir and thanks for this video

[@pangulurikrishnaprasad4660]

Sir in C3H6BrI problem As you said to correct if it is not CH3 and it is CH2 then the middle CH2 which is attached to both CH2 groups will give Quintet and how it will be Quartet ?

[@alischemistry]

panguluri krishnaprasad @You r 100% ryte sir..there is typographical error in that problem ..extrmly sorry for that hope next tym we will take care about it..thnk you for your kind suggetion..🙏☺️

[@mustafachoudhari2491]

Mass spectrum of toluene display the fallowing peaks m/e 92,91,65 ....more example

[@rutujanalawade6760]

thank you sir ...easily explained

[@PriyaSharmaBO]

Thankyou so much sir this is very helpful🤗

[@alischemistry]

Most welcome 😊

[@idealchemistrybysyedsabirs9380]

Main Syed Sabir sir AK number explanation

[@alischemistry]

☺️

[@muktagaikwad3493]

Such a superb explanation on nmr.. 👍👍

[@alischemistry]

Thanks a lot 😊

[@muhammadasfandyar8895]

very nice.. one thing I didn't get that why we have to calculate site of saturation?

[@alischemistry]

Its site of unsaturation and it is calculate to knw that how many no.of unsaturated bonds are dere..

[@muhammadasfandyar8895]

sir in one example, you calculated site of saturation=4. but there were 3 double bonds

[@alischemistry]

@@muhammadasfandyar8895 one site of unsaturation is consider for benzene ring..

[@muhammadasfandyar8895]

@@alischemistry oh.. now i got it.. jazaak Allah

[@karlemayurinamdev9550]

In C3H6BrI example Br attach to CH3 then carbon with 5 bond how this possible?

[@alischemistry]

Yes there was a typographical error in that problem..extremely sorry for that..👍😊

[@durgaprasadbellana]

In 2nd problem there is a 4 unsaturated but in benzene there is only 3 double bonds are exist

[@alischemistry]

yes but one unsaturation is count for a ring hence 4 unsaturation are considered for benzene ring

[@VikasSharma-bm9vx]

Please answer ::In an NMR experiment, hydrogen atoms are subjected to a magnetic field of 5.0T. Determine the difference in energy between two spin States of the nuclei of hydrogen atom and the frequency of radiation required for NMR.

[@alischemistry]

for 4.7 T magnetic field, 200 MHz frequency of radiation required..therefore for 5.0 T magnetic field 212.76 MHz frequency required..and we know that.. hv= hw where w is frequency of radiation.. therefore w=212.76 MHz.. energy difference between two spin states can be calculated using ∆E=hv equation h=6.623×10-34 now place all values in equation then ultimately u will get energy difference between two spin state in kJ/mole...Hope it helps you..☺️

[@VikasSharma-bm9vx]

@@alischemistrythank u sir 8.49×10 -5 KJ /mol is answer is it right

[@alischemistry]

@@VikasSharma-bm9vx ☺️

[@christinemathew4116]

Thankyou so much Sir....God bless you.

[@shubhamgupta9236]

Sir plz uploads more video for. NET&Msc purpose .your video helpfull solve to problems

[@alischemistry]

Thank you for your precious suggestion..We could not able to upload more videos due to lack of time but we assure you that we will upload more helpfull tricky videos soon..

[@shubhamgupta9236]

@@alischemistry Thanks

[@alischemistry]

@@shubhamgupta9236 If you find that our videos are helpfull then kidnly share to your all chemistry collegues..👏 Thank you...

[@shubhamgupta9236]

@@alischemistry waiting for tricky video

[@cookindia9630]

It's helpful for physic

[@siddharth4890]

Pls upload more videos related to nmr spectroscopy.and other topics .

[@ashokkumr7019]

Very well explanation sir

[@sameerseth3697]

29:15 valency of one carbon attached to bromine exceeds

[@shivamtripathi7518]

Explanation was wrong

[@akanksha42]

Sir pls csir-net ke sare topic pr solved questions ki video banaye pls because most of the students prepared for csir-net by self study and the problem is most of them unable to practice more and more questions related to respect topic and on you tube there is very much less content on questions series so pls pls make video on problem based on syllabus of csir-net. And pls Suggest book for practice questions topic wise for csir-net examination?

[@alischemistry]

We already uploaded CSIR NET 2018 june que.with perfect soln part B kzbin.info/www/bejne/qn2XaoKDgs94iNk

[@tayyabali-pf3mr]

Very very good

[@alischemistry]

Kindly share to your frds☺️

[@istkharahmed751]

Sir how can I understand there is methyl group benzene if delta2.2ya delta 6.6 hai here plz reply as soon as possible

[@alischemistry]

the delta value of methyl group which attached to benzene is mostly in between 2.1-2.4

[@kiramatkhan4524]

hyeee>>>>> nitrogen presence in a molecule will add one H to hydrogen

[@dipankarboruah6495]

Sir in example 2. Sides of unsaturation 4 but in derived structure we get 3 unsaturation.how?

[@dipankarboruah6495]

No thnks i got it three double bond and one ring

[@simranvasir1443]

Sir in C9H12 questiion Given NMR 6.78(S,3H) how you take as 3H not 1 CH3 ?

[@alischemistry]

simran kaur @Bcz of its 6.7 d value. It clearly indicating dat dere is benzene ring den how it could be CH3?

[@parvezsayyad8241]

simple and clearcut explanation

[@poojadipti4955]

Thank you so much.🙏

[@chemmistry2799]

Thank you so much sir very helpful

[@rahulchaudhari9039]

Sir plz make video on mass spectroscopy fragmentation pattern and fragmentation problems

[@alischemistry]

Rahul Chaudhari @sure ..

[@manojrathod2614]

Very nice explanation sir .👌

[@alischemistry]

🙏😊

[@priyanshumishra7590]

sir.. how we get to know that 3.49 delta means EWG present hai..

[@alischemistry]

Obviously because of high delta value which shows that there is a deshielding effect and which is caused by EWG ..

[@manjuraj7741]

In C9H12, sites of unsaturation is 4 but in the benzene structure there is 3 only . That part i have some dbt . Can you explain sir?

[@alischemistry]

In benzene always 4 sites of unsaturation are considered 3 unsaturation for 3 d.b insides the ring and one for entire ring.

[@donamm1887]

Excellent explanation, Thank you very much sir

[@alischemistry]

☺️👍

[@nafissir2759]

Nice explanation.#englishfeastnafissir

[@mohitsahu8143]

excellent trick Sir ji👍 👍 👍 👍

[@yendavarunkumar6824]

Excellent

[@gufranshaikh7331]

Thank you sir

[@Lol-pf5ln]

Sir can you plz tell me . Ki aapne 3.8 delta ko dekhke kese bataya ki kya ho sakta hai ?uska bhi koi chart ho to plz de dijiye

[@nikitapawar8545]

Thanks sir

[@bhimshi9939]

Thanks

[@tg_wrld]

Sir..( C3H6BrI )..ke example me( Br)jis carbon se attached hai uski valency incomplete hai...

[@alischemistry]

Ho tumcha bolna barobar aahe pan ..it was just typographical error..

[@anjaliawasthi4446]

thank you sir for information, can you give some information about how to predict data in LC-MS ?

[@alischemistry]

To predict the compounds present in any sample you should have a basic idea of Material Chemistry. 1)Chemical Nature of compound(Eg.Lipid, protein, lipo-protein etc) 2)m/z value of compound or Fragment (eg m/z 600 u get 100s of compound) 3)m/z value of signature ion fragments of a peak(eg m/z 57, 71, 85, 99, 113, 127, 141,... which are indicative of normal and branched alkanes.) 4) Library search(updated library up to date) will give the relevance of the compound to its identical members. 5)if u find Unique Fingerprint of both unknown and yours are 98-100% identical your compound is almost identified. 6)if not you have to analyse compound detailed (eg. cyclic and branched, saturated, unsaturated, rearrangemenst ion, radical ion, cleavage, loss of groups) 7)if you are unsuccess to identify with above steps you have to obtain more clear MS with at least 3 standards using advanced spectra and get analysed with MS experts(eg. ESI-MS and ESI-MS/MS, NMR, MALDI MS/MS, Tandem Mass Spectrometry (MS/MS) based on the chemical nature of your compound. 8) library search is normally done by software attached to instruments like NIST, NBS, wiley etc have updated compounds. 9) if your compound is not yet found based on above steps it might be novel and you can constrict its structure based on signature ions, groups, rearrangements etc.

[@ikootv8381]

You can visit to my channel for interesting mcqs with proper solutions okay...

[@chaturzamar5095]

nice undustanding sir.thanx

[@Amitkumar-bv1ew]

Thanks sir nice explanation

[@drzia4121]

Sir how to find equivalent proton .....sir plz video 2 days mai tricks ke saath banal....watching it on 3:30 in night ...really need ur help sir plz ....aglay Sunday ko test hai...plz plz sir

[@alischemistry]

DR ZIA@ it is not possible to make vdo in two days..i will make video for your finl exm done👍👍

[@gurwinderfazilka247]

very Nice sir . thank you...

[@kirtikumar683]

Sir please solve more question nmr for net exam

[@alischemistry]

Kirti Kumar @ohk defintly we will solve more problems n lectures regarding CSIR-NET but it will be posible in next month..

[@Twinscuties]

🙏🙏🙏nice video....

[@alischemistry]

😊👍 Kindly share to your all friends🙏

[@shubhamkamble9277]

#Very_Usefull... Nice👌👌👌

[@Shivanikumari-sj8fz]

Thank you sir !!

[@meghakeshri4488]

Can you please send me the PDF of spectroscopy by Donald pavia

[@pratikshasalave5524]

Nitrogen is replaced by 'CH ' not sabstracted 😈

[@alischemistry]

Pratiksha salave@ As far replacement of CH method is concerned it is correct that it is used to find the s.u...but here I have mentioned more convenient and easy method it takes short time than replacement of CH method.

[@pratikshasalave5524]

Ok 👍

[@dhanvarshavaghela6277]

Thank you so much this video help me for exam🙇🙇

[@alischemistry]

Most welcome😊 kindly share to all your chemistry frds..

[@bhatmehar7285]

Thanku sooooooo much sir

[@alischemistry]

☺️

[@vinayadhikari5405]

Sir I have questions which I am not able to solve so is there any way to contact you

[@roshanbagul7345]

Awesome teaching sirji

[@PinkiKumari-tv3vq]

(n+1)(m+1) rule is used for different neighboring proton

[@PinkiKumari-tv3vq]

Wrong explained

[@alischemistry]

@@PinkiKumari-tv3vq This video based on trick..its not matter about n+1 or m+1 rule we explained how to crack problem within minute..

[@exambreakers6347]

Sir please make c13 nmr videos with examples

[@alischemistry]

Sure🙂.. Kindly share video to your all frds n chemistry watsp.groups.✌️👍

[@devesinggirase5236]

Nice explained Thanks ..

[@SK88386]

4 unsaturation means... 4double bonds??

[@alischemistry]

Yes it is correct👍

[@SK88386]

@@alischemistry @14:34 there is 3 double bonds (from benzene only) but the unsaturation is 4

[@SK88386]

@@alischemistry sir I have one doubt @23:42 you said, benzene has 4 unsaturation sites but there is only 3 double bonds... How to identify unsaturation sites??

[@alischemistry]

@@SK88386 yes very gud que..one unsaturation is considered for entire bezene ring..( 3 unsaturation from 3 double bonds and 1 unsaturation from ring= total 4 unsaturation for benzene ring).

[@SK88386]

@@alischemistry Ohh Thank you sir..

[@shabnum4867]

What is the use of finding number of sites of unsaturation here?

[@alischemistry]

To estimate the number of double and triple bonds or ring in molecular structure.

[@shabnum4867]

Thanks a lot

[@PyaRe_boy]

More videos sir please

[@zahidjatt569]

Excellent work

[@alischemistry]

Thank u bhai😊👍

[@parvejkhanpk]

According to the datas given for C8H8O2, I think the correct answer will be para methoxybenzaldehyde.Because Carboxyllic acidic Hydrogen comes at >10-11 and here it is 1 singlet H peak is given at 9.7, moreover three singlet hydrogen given at 3.77 but normal CH3 cannot come in that...! Please check your answer and let me know, because as far as I have seen that you have given p-methylbenzoic acid as correct answer.overall video was very helpful.Thank you.

[@alischemistry]

Yes your are 100 % correct , this problem was mistakenly added by me and at that time I had no option to recorrect it ..Methyl grp attached to Benzene probably shows 2.1-2.4 delta value...(There was typographical error in that problem actual data was as given data a) 10.78 delta (singlet, 1H) b)7.75 ( doublet, 2H) c) 6.90 ( doublet, 2H) d) 2.47 ( singlet 3H) You can check trick at the end i have mentioned that methyl group attached to benzene will show 2.1- 2.4 delta value.

[@siddharth4890]

I have problem to solve ir reated question .pls tell from basics

[@alischemistry]

Don't worry for that we will upload video on IR problems soon..

[@siddharth4890]

Thanks sir

[@mustafachoudhari2491]

IR how will you fallow the following sequence of reaction by using IR

[@poojasharma-ge9mt]

Hume kese pata chalega ki compound aliphatic hai ya aromatic?

[@alischemistry]

Use Huckels rule to know aromatic or aliphatic..(4n+2pi)compounds

[@jatinnama337]

1:57 the compund you have taken will give only two nmr signal it should be triplet and quartret...

[@alischemistry]

Dear frd, it was not example u can see there i did not shown any kinds of data for that particular example ..It was just dummy example to understand the concept of (n+1) rule..

[@amolthombare2897]

Very good explain sir

[@ishitadas5908]

Site of unsaturation se kaise pata kar paa rahe h Ki structure sahi bana hai ki nahi?

[@alischemistry]

Not only site of unsaturation is used to predict structure but also IR resonance and NMR signals ..

[@goonjthevoiceinside7574]

Thanks a lot sir.....

[@sudipnarwade3385]

thank you so much sir

[@EmbellishWorld976]

Sir give more NMR problem video lecture video lecture please

[@Divyanegi626.]

Grt

[@jayminrudani]

Nice sir

[@SafdarHussain-cn3fr]

very thanks sir.

[@sayyedkaif1978]

Nicely explained sir

[@vaishudhili5672]

Tqqq sir