What is the $\mathrm{pH}$ of a buffer solution made by mixing $100 {\mathrm{cm}}^3$ of $0.1 \mathrm{mol} {\mathrm{dm}}^{-3}$ methanoic acid with $50 {\mathrm{cm}}^3$ $0.1 \mathrm{mol} {\mathrm{dm}}^{-3}$ sodium methanoate? ${\mathrm{K}}_{\mathrm{a}} \left(\mathrm{HCOOH}\right) = 1.6 \mathrm{x} {10}^{-4}$

One of the buffers in blood plasma is a mixture of dihydrogen phosphate ions$\left({\mathrm{H}}_2{{\mathrm{PO}}_4}^{-}\right)$ and hydrogenphosphate ions $\left({{\mathrm{HPO}}_4}^{2-}\right)$.

Identify the conjugate acid and base in this buffer.

One of the buffers in blood plasma is a mixture of dihydrogen phosphate ions$\left({\mathrm{H}}_2{{\mathrm{PO}}_4}^{-}\right)$ and hydrogenphosphate ions $\left({{\mathrm{HPO}}_4}^{2-}\right)$.

Write a balanced equation for the equilibrium between these two ions.

Write equilibrium expressions for the solubility product of the following:

$\mathrm{Fe}{\left(\mathrm{OH}\right)}_2$

Write equilibrium expressions for the solubility product of the following:

${\mathrm{Fe}}_2{\mathrm{S}}_3$

Write equilibrium expressions for the solubility product of the following:

State the units of solubility product for following compound

$\mathrm{Fe}{\left(\mathrm{OH}\right)}_3$

State the units of solubility product for following compound

${\mathrm{Fe}}_2{\mathrm{S}}_3$

State the units of solubility product for following compound

$\mathrm{Al}{\left(\mathrm{OH}\right)}_3$