Acidic strength order of mineral acids in acetic acid


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> Explain this acidic strength order $\ce{H2SO4} > \ce{HCl} > \ce{HNO3}$ in acetic acid.
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### My Attempt


Stability of conjugate base is proportional to the acidic strength of acids in acetic acid.


1. $\ce{SO4^2-}$ has two resonance structures.
2. $\ce{NO3-}$ has three resonance structures.
3. $\ce{Cl-}$ is stable due to octet formation.


As for electronegativity order, Cl is on par with N (almost equal).


According to stability, $\ce{HNO3}$ must me more acidic than $\ce{HCl}.$ Also, electronegativity of N & Cl is almost the same.


So, according to me, the order must be $\ce{HNO3} > \ce{H2SO4} > \ce{HCl}.$


Where am I wrong? Please explain.


