Polyprotic Acid pH

Rank the following in terms of acidity: HClO, IOH, and HBrO. Explain the trend.

Rank the following in terms of acidity: HClO, HClO$_2$, HClO$_3$, HClO$_4$. Explain the trend.

What is the pH of a 0.1 M sulfuric acid solution? (did you know sulphuric is an alternative spelling?)

H$_2$SO$_4$ + H$_2$O $\longrightarrow$ HSO$_4^-$ + H$_3$O$^+$, K$_{a1}$ = 1.0 x 10$^{3}$

HSO$_4^-$ + H$_2$O $\longrightarrow$ SO$_4^{2-}$ + H$_3$O$^+$, K$_{a2}$ = 1.2 x 10$^{-2}$

Calculate the pH of a 5.0 M H$_3$PO$_4$ solution and the equilibrium concentrations of the species H$_3$PO$_4$, H$_2$PO$_4^-$, HPO$_4^{2-}$, and PO$_4^{3-}$.