MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: R

There are no items in this cart.
Continue Shopping
Menu
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Get extra R 400 off
USE CODE: MOB20

				   

i have read that in SN2 reactions, a good nucleophile is preferred, whereas in E2 reactions, a good base is preferred.how can i tell at a glance, the difference between a good base and a good nucleophile?also, please give me a list of both?

4 years ago

Share

Answers : (2)

										

A good nucleophile is always a good base, but it is not necessary that a good base is always a good nucleophile. Other factors like bulk of base, steric effects r effects the overall nucleophilicity oif the base. If u use a bulky and strong base, surely E2 product dominates in Sn2 substitutuion. However is u use light strong base, Sn2 product dominates.     

4 years ago
										

the properties of a good nucleophile : 


1. high electon density on central atom.


2. less sterically hindered.


e.g. OH- , RO- 


 


the properties of a good base: 


high Kb


 


* A good nucleophile can also be a good base.


* wheather SN2 takes place or E2 depends on nature of both substrate and reagent(nucleophile), 


first observe substrate- primery , sedcondry or tertiery


then if its primery , see if its hindered or not


if its hindered then surely elimination takes place (nucleophile will not substitute due to steric reasons)


if its not hindered then see if the nucleophile is hinderded or not .


if either of two (substrate or nucleophile) is hindered then E2 takes place , OR Sn2 takes place.


 


Secondary substrate : elimination will be major if nucleophile is good base


 


tertiery substrate : elimination.

4 years ago

Post Your Answer

Aliphatic carboxylic acids are isomeric with ….….….….….….?????????
 
 
Dear Kumar The answer for your question is ESTERS All the best for your bright future….….….….….….….….….….….….
 
Prabhakar ch 3 months ago
 
Hi kumar, Aliphatic carboxylic acids are isomeric with esters..................................................
 
Gowri sankar 3 months ago
 
hello kumar the answer of your question is esters.... it is good question keep it up and ask the questions when you have doubt.
 
ULFAT one month ago
what is graphine? what is the importancce of graphine?
 
 
Graphene is a two-dimensional honeycomb arrangement of carbon atoms .imporatance Graphene has the best electrical conductivity of any material. it can be used to test the predictions of...
 
SAHIL one month ago
 
hello, Graphene is a two-dimensional honeycomb arrangement of carbon atoms .imporatance Graphene has the best electrical conductivity of any material. it can be used to test the predictions...
 
raj kumar 19 days ago
 
graphine is the one layer of graphite a form of carbon consisting of planar sheets which are one atom thick, with the atoms arranged in a honeycomb-shaped lattice.
 
ULFAT one month ago
Berrilium electronic configuration
 
 
1s2 2s2
 
Gavvala Ganesh 7 months ago
 
1S 2 2S 2 is the electronic configuration of the berillium compound it is the alkali earth metal berillium compounds are covalent compounds
 
RAMCHANDRARAO 5 months ago
 
1s2 2s2
 
SHANMUKESHWAR 7 months ago
What is van’t half method
 
 
The relation between rate of reaction, initial concentration and order
 
Gavvala Ganesh 7 months ago
 
The Van 't Hoff equation in chemical thermodynamics relates the change in the equilibrium constant, K eq , of a chemical equilibrium to the change in temperature, T, given the standard...
 
RAKESH CHINDAM 7 months ago
 
The relation between rate of reaction, initial concentration and order r is directly propotionals to a^n
 
L GOUSE BASHA 7 months ago
what are insulators??explain it briefley with some examples.????????????????????????????????
 
 
Dear Sreekanth An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it nearly impossible to conduct an electric current under the...
 
Prabhakar ch 3 months ago
 
An electrical insulator is a material whose internal electric charges do not flow freely, and therefore make it nearly impossible to conduct an electric current under the influence of an...
 
raj kumar 3 months ago
 
Hello Sreekanth Insulator is a noun that means a material with little electrical or thermal conductivity. Any material that keeps energy such as electricity, heat, or cold from easily...
 
Gaddam Chethan 3 months ago
What is a double salt? Give an example?
 
 
Double salt defination: a crystalline salt having the composition of a mixture of two simple salts but with a different crystal structure from either. Examples: double salts include alums...
 
RAKESH CHINDAM 7 months ago
 
" double salt " definition: a solution of 2 simple salts that forms a single substance on crystallization. ... Examples of double salts include alums or Tutton salts.
 
KUNCHAM SAMPATH 7 months ago
 
This preparation is a double salt of potassium and iron ; it is therefore wrongly called tartrate of iron as is commonly heard. With sulphate of potassa it forms a double salt (manganese...
 
venky 7 months ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,000 off
USE CODE: MOB20

Get extra R 400 off
USE CODE: MOB20

More Questions On Organic Chemistry

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details