Questions: At label 1 on the curve the predominant form of His is His^2- is - At label 2 on the curve the average net charge of His is -0.5 - At label 3 on the curve His is at its greatest buffering capacity - At label 4 on the curve pH=pKa of the carboxyl group - At label 5 on the curve histidine's carboxyl group is completely titrated with OH^- - At label 6 on the curve the predominant form of His is His^1- is -

Transcript text: At label 1 on the curve the predominant form of His is $\mathrm{His}^{2-}$ is - $\qquad$ At label 2 on the curve the average net charge of His is -0.5 - $\qquad$ At label 3 on the curve His is at its greatest buffering capacity - $\qquad$ At label 4 on the curve $\mathrm{pH}=\mathrm{pKa}$ of the carboxyl group - $\qquad$ At label 5 on the curve histidine's carboxyl group is completely titrated with $\mathrm{OH}^{-}$- $\qquad$ At label 6 on the curve the predominant form of His is $\mathrm{His}^{1-}$ is - $\qquad$