Resonance

[Malia Shitabata 1F]

Resonance spreads the delocalized charge over more atoms and increases stability. Does this mean that if a molecule has resonance it's a weaker atom since the bonds will be more stable and take more energy to break?

[Ayushi2011]

I don't think resonance has got to do with strength per se. It is more about stabilizing the atom by delocalising the electrons. it also maintains a constant bond length in the compound.

[Malia Shitabata 1F]

So does this increase acidity strength or decrease it?

[KaitlynBali_4B]

So does this increase acidity strength or decrease it?

An acid is a relatively strong acid if its resulting anion is stable. An anion with resonance is stable, and so its acid can be considered to be a strong acid relative to other acids. However, it does not mean that the acid is necessarily a "strong acid". The anion of sulfuric acid is stable because of resonance, and sulfuric acid is known to be a strong acid. However, acetic acid's anion is stable because of resonance, but it is known to be a weak acid: it is a strong acid compare to other weak acids.