Identify the weakest acid.
A) HF
B) HCl
C) HBr
D) HI
E) All of the above are weak acids.

Question

Quizplus · Accepted Answer

HF is the weakest acid because it has the strongest bond between its hydrogen atom and the fluorine atom. This makes it difficult for HF to donate a proton and thus makes it a weak acid. In contrast, HCl, HBr, and HI have weaker bonds between their hydrogen atoms and halogen atoms, making it easier for them to donate a proton and considered to be stronger acids than HF.

Identify the Weakest Acid