ph v. pka

[505578531]

Can someone explain the difference between ph and pka? I think I get it but I had a hard time with the hw so maybe I have something wrong

[Kainalu Puu-Robinson]

Simply put, pKa is the pH value at which a chemical species will accept or donate a proton. Google said that "The pH is a measure of the concentration of hydrogen ions in an aqueous solution. pKa (acid dissociation constant) and pH are related, but pKa is more specific in that it helps you predict what a molecule will do at a specific pH."

[Nicole Bruno Dis 1B]

pH measures the hydrogen ion concentration of a solution, which pKa helps predict what a molecule will do at a certain pH level (i.e. what does the pH need to be in order for a chemical species to either donate or accept a proton?)

[Nicole Bruno Dis 1B]

For example: the lower the pKa, the stronger the acid and the greater its ability to donate protons.

[Susanna Givan 2B]

Can pka have an effect on how molecules interact with each other in reactions?