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Wednesday, January 8

Organic Reactions

Organic Reaction 

Starting from organic chemistry basic reactions we have Alkenes and how to prepare them well I am going to show you some simple shortcuts to remember these things.

Decarboxylation of mono-carboxylic Acids:

Hope you got it.
NUST Entry test MCQ regarding this topic is given below

The answer is C , methanoic acid .

"Decarboxylation of Benzoic acid will yield Benzene"

Kolbe’s electrolysis method is a difficult one , you must remember the products it yield when a certain acid is give.
This will help you remembering which acid yield what!

Maleic acid and Fumaric acid must be remembered.

Now Kolbe’s electrolytic method explained , try to write this down on your note book and then solve please you will understand.


All these methods are used to prepare alkanes :)

Clemnnsesn and Wolf-kishners method is used to prepare Alkenes by Reduction.

Starting from Acids.

Acetic acid > Aldehyde > primary alcohol > Ethane 

You must remember this , very important asked many times in NET

Q: The Reduction of Aldehyde yield which type of alcohol the answer is P.Alcohol
Q: the reduction of ketones yields which type of alcohols well the answer is Secondary alcohol

Now getting to the alkenes production , just remember this shortcut.

Dehydrating agents
H2SO4 , P2O5 are dehydrating agents , mean de(remove) hydrate(water) so they remove water from alkenes forming alcohol. At different temperature they yield different alcohols. See book for that (IMPORTANT!!!)


See the picture below

Polymerization , production of benzene conversion , all covered in same topic :)

most important from board point of view. Distinguish 1-butyne from 2-butyne.

Wurtz synthesis
This reaction is used to prepare symmetrical alkane. This was question of 2013 board exam convert ethane into methane and methane into ethane :) I hope you can do it too now.

Different reactions used for preparing alky halides;

H------O------H   -----------> HCl of left end SO2 in middle and HCl on right


Rest of reactions are same as above :)
that’s it from me :)

Entry # 8
By Mamoon Sharif


  1. very helpful!

  2. keeeep it up bro........ chaaaw gaye

  3. awesome post ....very helpful and conceptual

  4. thank you :)

  5. thank you bro :)

  6. bohtt fit hai (y) keep it up :)

  7. I Like your way of explanation (y)

  8. Nice work! These shortcuts will surely help me a lot :)

  9. awlla bhae nice nd great work for studnts (y)

  10. Exellent job Sir thanks alot ...


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