chemistryTopic 6 · Rates and EquilibriumPaper 2Grades 8–9
How should an ammonia plant respond to an energy-price crisis?
Starting scenario
At condition A, equilibrium yield is 42% and one batch takes 12 min. Condition B gives 58% yield but takes 31 min and uses 35% more compression energy. A new catalyst halves the time at both conditions but costs more and does not alter equilibrium composition.
You will work through 8 staged questions that build up the science you need. Then you will answer one big-picture question from memory, with no checklist to help you — and only afterwards will the full connection map be revealed.