3. Acids and Bases

Which of the following compounds has the lowest $pKa$ value?

Which of the following molecules contains a hydrogen atom with a $pKa$ value between $20$ and $25$?

In the context of acid-base chemistry, what does the $p$ in $p{K}_a$ represent?

Rank the following compounds in the order of increasing acidity.

Rank the following organic compounds in the order of increasing pKa.

Why is the $pKa$ of cyclopentane so much higher than the $pKa$ of cyclopentadiene?

What is the approximate $pKa$ value of acetic acid (${\mathrm{CH}}_3\mathrm{COOH}$)?