Equilibrium calculations with ICE tables

The cyanide ion acts as a ligand in many complex ions, for example hexacyanoferrate(III), $\ce{[Fe(CN)6]^3-}$. (i) State the type of bond, as precisely as possible, that joins each cyanide ion to the iron ion. (ii) Deduce the oxidation state of iron in…

A sample of 0.0120 mol of $\ce{NO2}$ was sealed in a vessel of volume 1.00 $\mathrm{dm^3}$ and kept at 10.0 °C until equilibrium was established. At equilibrium, 0.00860 mol of $\ce{NO2}$ remained in the vessel. Using the expression below, determine $K$ for…

By the time equilibrium was reached, the vessel held 1.7 mol of $\ce{H2(g)}$. Calculate the equilibrium amounts, in mol, of the three remaining gases, then use them to calculate $K$.

Nitrogen reacts with hydrogen to form ammonia. $\ce{N2(g) + 3H2(g) <=> 2NH3(g)}$ A mixture of 1.50 mol of $\ce{N2(g)}$ and 4.20 mol of $\ce{H2(g)}$ was placed in a 1.00 $\mathrm{dm^3}$ container at a certain temperature. At equilibrium the mixture contained…

The equilibrium constant, $K_\mathrm{c}$, for the reaction in (f) is $6.4 \times 10^{-5}$ at 80 °C. (i) $1.00\ \mathrm{dm^3}$ of a mixture that is initially $0.20\ \mathrm{mol\,dm^{-3}}$ in octadecanoic acid and $0.20\ \mathrm{mol\,dm^{-3}}$ in butan-2-ol is…

The equation for a reaction between gases X and Y is: $\ce{2X(g) + Y(g) <=> 2Z(g)}$ At equilibrium at 700 K the concentrations of X, Y and Z are $0.50\ \mathrm{mol\,dm^{-3}}$, $0.40\ \mathrm{mol\,dm^{-3}}$ and $1.0\ \mathrm{mol\,dm^{-3}}$ respectively.…