Find the molar hydrogen ion $(H^{+})$concentration and the hydroxide ion $(O{H}^{-})$concentration in a

baking soda solution with $pH8\mathrm{.}8.$

A soda can has $1\mathrm{.}5$ atm pressure with pure $C{O}_2.$ What would be the concentration $($units $=\frac{g}{L})$

of dissolved $C{O}_2$ in equilibrium with the atmosphere at $25C?.$ The Henry's constant for $C{O}_2$ is

$3\mathrm{.}38{10}^{-2}\frac{M}{a}tm.$

Cadmium is present in its ionic form at $4\mathrm{.}2m\frac{g}{L}$ in water. At what $pH$ will the cadmium begin to

precipitate? The $K_{sp}$ and precipitation reaction are:

$K_{sp}=5\mathrm{.}27{10}^{-15},Cd(OH{)}_{2}harrC{d}^{2+}+2O{H}^{-}$