help@askiitians.com

+91-87964 74404

Grade 12th passOrganic Chemistry

Which among the given has lowest pKa value :-
1) chloroacetic acid
2) bromoacetic acid
3) nitroacetic acid
4) cyanoacetic acid

Please provide me answer with proper reasoning.I know that stronger acid has lower pKa value but how to determine which one is stronger ?

Shivi .

7 Years agoGrade 12th pass

1 Answer

Aastha Singh

Approved Tutor Answer7 Years ago

Dear student,

Low pKa means they are asking for stronger acid,

this will work on the principle of conjugate base, the more stronger the acid is, the weaker/stable is its conjugate base.

here all are electron withdrawing groups which will pull and delocalize the electron of the conjugate base of substituted acetic acid and make it more stable.

The electron withdrawing tendecy/ base stabilising tendency/imparting more acidic character tendency are in this order:-

-NO₂>-CN>-Cl>-Br

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

Using above information
Match the following

organic chemistry

1 Answer Available

Last Activity: 3 Years ago

Dr. Ronald Lance is the greatest spell caster in the world also referred to as the most powerful saiki in the world by those who have used his powerful magic spells, weather you aiming at fixing your love, relationship or marriage, Ronald Lance is a real spells caster for your needs, bear in your mind that you are about to get in touch with our very experienced spells caster verified for casting authentic spells Call/Whats App+27634928462

organic chemistry

3 Answers Available

Last Activity: 3 Years ago

Plz answer this query.....................................................................................................

organic chemistry

1 Answer Available

Last Activity: 3 Years ago

how to represent the possible fischer projections for 2-bromohexane

organic chemistry

1 Answer Available

Last Activity: 4 Years ago

View all Questions