Formic acid vs Benzoic Acid

[Rexspidy]

Which is more stronger acid ? Explain with the H+ dissociation

[Fuzzwood]

... Explain with the H+ dissociation

So why don't you give that a try?

[BabcockHall]

Start by looking both compounds up in a table of pK_a values.

[Elite Engineer]

Which dissociates more completely. As BabcockHall said, check the pk_a values, it should be clear.

[Rexspidy]

Ya it is clear with pka values but how formic acid can be stabilize more than C6H5COOH after H+ dissociation

[BabcockHall]

I might offer a guess that it has something to do with solvation. How could you test that hypothesis?

[hypervalent_iodine]

It has to do with stability. You should ask yourself whether the phenyl ring is electron donating or withdrawing in this context.

[BabcockHall]

My understanding of Felix Carroll's table of gas-phase acidities (Table 7.4, p. 406) suggests to me that benzoic acid is actually stronger than formic acid in the gas phase.