[BloodCrisis]

Maybe someone can help me with this kinda of empirical thing...
"Please order according to basicity" and the options were
Alcohol/alifatic amines/ aromatic amines/ NH₃/esters/alquenes/ Cl ^-trimethylammonium

[Makush]

nh3 > alifatic amine < aromatic amine > alquene > ester > trimethilamonium Cl-> alcohol

im sure about the first 3....im confuse about trimethilamoniumCl- because is a neutral compond :S,

Alcohol is definetly the most acidic compound there.

I hope this helps a little bit.

[BloodCrisis]

Thanks, but i thought that a substituted amine was more basic than a nh3 because yo have M+ effect...
I cannot determine how basic is an ester since it comes from an acid and the same with the salt, o thought that was much more basic because its from an amine.

[fledarmus]

You are not looking for acidity here, you are looking for basicity. The statement "alcohol is the most acidic compound here" is referring to the reaction R-OH ---> R-O^- + H⁺, while the reaction you are looking for is R-OH---> R-OH₂⁺.

Set up this reaction for each of your examples, and see if you can determine which reactions are most likely to occur.