IIT JAM

follow

Top Resources

S

Shweta Thakur posted an Question

April 01, 2021 • 21:11 pm

30 points

IIT JAM
Chemistry (CY)

Acidic order plz explain....i know in 1 and 3,1 is more acidic because lesser + inductive effect looy hodh i) cgas (ooh di) (i)

Rlooy HODH i) CGAs (ooH di) (i).ncxkhxkgxkz ljcjlxkhzgjzkhxvhkdjgzkh lhdiy

3 Answer(s)

0 Likes
4 Comments
0 Shares

>
Bhagat singh 1

answer 1>2>3
- Likes(0)
- Reply(0)

>
Dinesh khalmaniya 1

Formic acid is stronger than benzoic acid because it has a lower pKa value. Formic acid does not have such a group of electron donors and is stronger than acetic acid. The acidity is due to the stablity of congugate base. Here, In Formic acid resonance is stabilised via two equivalent resonating structure. On the other hand, in case of Benzoic acid the conjugate base is stabilised via resonance of benzene ring.
- Likes(0)
- Reply(5)
always resonance is more effective than inductive
- Like(0)
why
- Like(0)
kyunki overlapping polarization se Jada effective rehta right
- Like(0)
because resonance k during resonance energy release hoti he jo molecule ko stable krti he
- Like(0)
sir plz check....can I say this .
- Like(0)

A
Achyut ranjan gogoi

formic acid is strongest among all then benzoic acid.
- Likes(0)
- Reply(1)
formic acid is strongest due to -I effect of hydrogen while in benzoic acid there is some cross conjugation due to which it is less acidic than formic and acetic acid is the least due to +I effect of methyl group
- Like(0)

>
Priyanshu kumar Best Answer

formic acid is more acidic than benzoic acid.
- Likes(0)
- Reply(3)
The acidity is due to the stablity of congugate base. Here, In Formic acid resonance is stabilised via two equivalent resonating structure. On the other hand, in case of Benzoic acid the conjugate base is stabilised via resonance of benzene ring.
- Like(0)
Benzoic acid is stronger than acetic acid because the electron-donating inductive effect (+I) by the alkyl group on acetic acid destabilise the conjugate base of acetic acid (i.e. the acetate ion). In contrast, benzene rings are known to be electron dense and pull electrons away from groups attached to it. order will be 1>2>3
- Like(0)
sir
- Like(0)

T