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Formic acid is more acidic because formic acid is a smaller molecule as compare to acetic acid so polarity is working in small area and O-H bond is more polar HCOOH, in acetic acid the additional CH3- group is an electrons donor group so O-H bond is little bit stronger and less polar so it is weaker acid.

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Q: What is more acidic acetic acid or formic acid or prop ionic acid?
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Which acid what is the strongest - Formic acid or Acetic acid?

Acetic acid is stronger than formic acid.


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Why formic acid more acidic than acidic acid?

Formic acid is a smaller molecule as compare to acetic acid so polarity is working in small area and O-H bond is more polar HCOOH, in acetic acid the additional CH3- group is an electrons donor group so O-H bond is little bit stronger and less polar so it is weaker acid.


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Because it has a greater/higher Ka (dissociation constant). This is related to the ease with which the H+ can be released from the COOH group.


What are the 2 organic acids?

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What are the differences between formic acid and acetic acid as buffer in LC-MS?

Formic acid is generally considered to have lower contamination levels than acetic acid, especially metal ions. Formic acid is slightly more volatile and less smelly! -DN


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Why formic acid is stronger than acetic acid?

As we know that acetic acid is CH3 substituted formic acid .since CH3 is an electron donating relative to hydrogen .so, it donates the electron to carboxyl group and makes it more negative. this phenomenon makes acetic acid weaker acid than formic acid .Thus formic acid is stronger acid than acetic acid. Written by Mayank shekhar "student of ISc {PCM} R.L.S.Y college ,Magadh university ,bodh gaya ,Bihar