An equilibrium system is established in the gas phase according to the equation:
NO2(g)+CO(g)⇌NO(g)+CO2(g) \text{NO}_2(g) + \text{CO}(g) \rightleftharpoons \text{NO}(g) + \text{CO}_2(g) NO2(g)+CO(g)⇌NO(g)+CO2(g)Different initial amounts of NO2\text{NO}_2NO2, CO\text{CO}CO, NO\text{NO}NO, and CO2\text{CO}_2CO2 are introduced into four identical, separate containers of the same volume at a constant temperature, as detailed in the table below.
| Container | NO2\text{NO}_2NO2 / mol | CO\text{CO}CO / mol | NO\text{NO}NO / mol | CO2\text{CO}_2CO2 / mol |
|---|---|---|---|---|
| A | 2.0 | 2.0 | 0.0 | 2.0 |
| B | 0.0 | 2.0 | 2.0 | 2.0 |
| C | 2.0 | 0.0 | 2.0 | 2.0 |
| D | 2.0 | 2.0 | 2.0 | 0.0 |
Which container will contain the largest concentration of CO(g)\text{CO}(g)CO(g) when equilibrium is established?
Container A
Container B
Container C
Container D
23 exam-style questions on OCR A A Level Chemistry Chemical equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.