Question

Calculate the pKa value for the following acids. Nitrous acid (HNO2), `K_a = 4.5 xx 10^(-4)`?

Answer 1

`3.35`

Explanation:

`"pK"_"a" = -"log K"_"a"`

`"pK"_"a" = -log(4.5 × 10^-4) = 4 - log(4.5) = 3.35`