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Chemistry 16 Online
OpenStudy (yrelhan4):

how do you decide strength of a nucleophile?

OpenStudy (yrelhan4):

@abb0t

OpenStudy (yrelhan4):

@DLS

OpenStudy (dls):

The larger the size,the stronger is the nucleophile,for example I-

OpenStudy (yrelhan4):

ch3-, nh2-, oh-, f- .. arrange?

OpenStudy (dls):

Try drawing structures of all of them

OpenStudy (yrelhan4):

usse kya hoga?

OpenStudy (dls):

pata nahi :p

OpenStudy (dls):

NH2-.OH-,F-

OpenStudy (dls):

idk about CH3-

OpenStudy (dls):

ill tell you tomorrow,a better answer indeed.

OpenStudy (yrelhan4):

okay. explain to me the whole concept. mai bhul chuka hun. :/

OpenStudy (dls):

(Y)

OpenStudy (yrelhan4):

@shubhamsrg

OpenStudy (yrelhan4):

tune batana tha mujhe ye? :/ @DLS

OpenStudy (dls):

kal exam kal pakka :P

OpenStudy (yrelhan4):

hmm. ok.

OpenStudy (shubhamsrg):

conjugate acid likh ke dekho ?

OpenStudy (yrelhan4):

ch4, nh3, h2o, hf.....

OpenStudy (shubhamsrg):

stronger conjugate acid--> weaker base

OpenStudy (yrelhan4):

hmm. hf>h20>nh3>ch4 ?

OpenStudy (yrelhan4):

h2o*

OpenStudy (yrelhan4):

acidic strength.

OpenStudy (shubhamsrg):

nh3 is thw strongest base among all isnt it ?

OpenStudy (yrelhan4):

pta nhi. kyun? lone pair?

OpenStudy (shubhamsrg):

yep..all ammonia compounds are very strong lewis bases because of lone pair and size

OpenStudy (shubhamsrg):

not very strong, just lewis bases.

OpenStudy (yrelhan4):

nucleophilicity directly proportional to basic strength na?

OpenStudy (shubhamsrg):

ha

OpenStudy (yrelhan4):

ha? haha or han? :O

OpenStudy (shubhamsrg):

haha. han :P

OpenStudy (yrelhan4):

i just checked the answer ch3-> nh2-> oh-> f- ??

OpenStudy (shubhamsrg):

ohh,, ch4 stronger base hota hai nh3 se ?

OpenStudy (yrelhan4):

i dont know. yahi hoga phir.

OpenStudy (shubhamsrg):

ohh,, sahi to hai

OpenStudy (shubhamsrg):

order acid strength ka hoga hf>h2o>ch4>nh3

OpenStudy (shubhamsrg):

ohh nahi :P

OpenStudy (shubhamsrg):

sorry just checked on google, ch4 is stronger base. http://www.masterorganicchemistry.com/2010/09/29/how-to-use-a-pka-table/

OpenStudy (yrelhan4):

wait. ch4 and ch3- are both stronger bases than nh3 and nh2-?

OpenStudy (shubhamsrg):

arre yaar kitna confusion hai! :P so sorry :/

OpenStudy (shubhamsrg):

ch3- stronger base hai nh2- se hmm, to ch4 weaker acid hai nh3 se hence ch4 stronger base hai nh3 se yepo

OpenStudy (yrelhan4):

hmm. samajh gya. but... why is ch3- stronger base than nh2-? :P

OpenStudy (shubhamsrg):

-ve charge aa jata hai less electro-ve element pe shayd isliye ?

OpenStudy (yrelhan4):

hmm. sahi hai. (y)

OpenStudy (yrelhan4):

another question. ch3o-, oh-,pho-, aco- nucleophilicity?

OpenStudy (yrelhan4):

@shubhamsrg

OpenStudy (shubhamsrg):

ch3oh , h2o,phoh,ac0h hmm..

OpenStudy (shubhamsrg):

whats your guesS?

OpenStudy (yrelhan4):

acidic charcater.. acoh>phoh. so the basicity should be pho->aco- . i got this right. h20>ch3oh +I effect of ch3oh. so the basicity should be oh->ch3o- but this is wrong..

OpenStudy (shubhamsrg):

alcohols are acidic ins't it ?

OpenStudy (shubhamsrg):

exception? below in the comments , they say it is more acidic!

OpenStudy (yrelhan4):

ch3oh>h2o but in general alcohols are less acidic than water.

OpenStudy (shubhamsrg):

hmm

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