This question is about the equilibrium reaction for the industrial synthesis of methanol:
CO(g)+2H2(g)⇌CH3OH(g)\text{CO}(\text{g}) + 2\text{H}_2(\text{g}) \rightleftharpoons \text{CH}_3\text{OH}(\text{g})CO(g)+2H2(g)⇌CH3OH(g)
State and explain the effect, if any, of an increase in overall pressure on the equilibrium yield of CH3OH\text{CH}_3\text{OH}CH3OH.
A 0.600 mol0.600\text{ mol}0.600 mol sample of CO\text{CO}CO is mixed with a 1.600 mol1.600\text{ mol}1.600 mol sample of H2\text{H}_2H2 in a sealed container at a constant temperature. When equilibrium is reached at a total pressure of 210 kPa210\text{ kPa}210 kPa, the mixture contains 0.400 mol0.400\text{ mol}0.400 mol of CH3OH\text{CH}_3\text{OH}CH3OH.
Calculate the partial pressure, in kPa\text{kPa}kPa, of H2\text{H}_2H2 in this equilibrium mixture.
A different mixture of CO\text{CO}CO and H2\text{H}_2H2 reaches equilibrium at a different temperature. The table below shows the partial pressures of the gases at equilibrium:
| Gas | Partial pressure / kPa\text{kPa}kPa |
|---|---|
| CO\text{CO}CO | 1.25×1021.25 \times 10^21.25×102 |
| H2\text{H}_2H2 | 2.50×1022.50 \times 10^22.50×102 |
| CH3OH\text{CH}_3\text{OH}CH3OH | 5.00×1015.00 \times 10^15.00×101 |
Give an expression for the equilibrium constant (KpK_pKp) for this reaction. Calculate the value of the equilibrium constant for this reaction and give its units.
What is the effect on the value of KpK_pKp if the pressure of this equilibrium mixture is increased at a constant temperature?
Select one option: