The 3 steps for determining the direction of acid and base equilibrium

[@ramseyfarr9617]

So what he totally left out is that, sometimes we are not given Pka values (99% of the time). In this case you need to look at acidity trends to come up with an answer. 1. We have electronegativity of the element next to the donating hydrogen, 2. inductive effect (how much are strong electronegative elements pulling other weaker element's e's away. This makes the hydrogens even more positive and ultimately easier to donate. 3. The larger the atom bonded to the hydrogen (for example Iodine) the stronger it is compared to Florine. Hope that helps.

[@carolinebegala]

Thank you

[@herbertgunther8951]

So if i do not know the products, the one with the lower pka is the acid, right? e.g. 4 Nitrophenol (pkA~7) and 4 Nitroaniline (pkA~1) so the one with the lower pkA (in this case 4 Nitroaniline) than the acid and gets deprotonated? and if no nitro groups are present: Phenol (pkA~10) and Aniline (pkA~27) then the Phenol gets deprotonated? I am a little confused :D

[@Clutchprep]

Hey Herbert! Yes, you got it right! The one which is more acidic (low pKa) will be the one losing the acidic H. :)

[@Spiritusaj]

You didn't go over which side would be favored as a result of these trends/steps.

[@Clutchprep]

Hey there! The final step will help you decide if the reaction will go to the left or right. As what I've said, you have to compare the pKa of the Lewis acids and the reaction will favor the direction of the stronger to the weaker acid. So technically, the weaker acid is more stable that's why it is favored. Hope that makes sense! :)

[@cc_isgreat671]

I have this account. This video did not help me as much. They did not give me a pKa. it just gave me an equation and asked "Consider the following reactions and determine the direction of the equilibrium."

[@Clutchprep]

Hey Charlene, you can check more of our video on the site :)