strong and weak acids

[Cynthia Ulloa]

Can someone explain why solutions of weak acids have a higher pH?

[Becky Belisle 1A]

Solutions of strong acids have a higher pH than solutions of weak acids of the same the molarity. For weak acids: the weaker the acid, the greater the pKa.

[Irene Zhou 1E]

Solutions of weak acids have a higher pH value than solutions of strong acids because it has a lower concentration of hydronium ions, so it is less acidic.

[Alysa Rallistan 2G]

Weak acids tend to have higher pH because they do not tend to fully dissociate into hydronium ions and their respective anions. When you calculate the pH of a solution, you take the -log of the concentration of Hydronium ions, for weak acids this concentration will be relatively low compared to strong bases, so when taking this calculation the smaller the number in the -log the higher the overall value (and thus pH) becomes

[Shibhon_Shepard]

the more H3O+ ions there are the stronger the acid, so lower H3O+ ions means higher pH. (It's completely based on the H3O+ ions)

[Catly Do 2E]

A weak acid has less % dissociation (less of the acid, or the [HA] is breaking down), so that means when you take the pH, the value will be higher.