Question

1. At a certain temperature, 0.338 mol CH4 and 0.808 mol H2O is placed in a 4.00 L container. CH4(g)+2H2O(g)????CO2(g)+4H2(g) At equilibrium, 4.89 g CO2 is present. Calculate Kc.

2. At a certain temperature, 0.352 mol CH4 and 0.862 mol H2S are placed in a 1.50 L container. CH4(g)+2H2S(g)????CS2(g)+4H2(g) At equilibrium, 14.5 g CS2 is present. Calculate Kc .

3. At a certain temperature, 0.3211 mol of N2 and 1.501 mol of H2 are placed in a 2.50 L container. N2(g)+3H2(g)????2NH3(g) At equilibrium, 0.1001 mol of N2 is present. Calculate the equilibrium constant, Kc.

4. Phosphorus pentachloride decomposes according to the chemical equation PCl5(g)????PCl3(g)+Cl2(g)Kc=1.80 at 250° C A 0.172 mol sample of PCl5(g) is injected into an empty 2.65 L reaction vessel held at 250° C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.

Answer 1