SC12 - Reversible Reactions and Equilibria ✓
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SC12a - What is a reversible reaction?
A reaction where the products can react again to reform the reactants
SC12a - What symbol would show that a reaction is reversible?
⇌ : The double arrow
SC12a - In a reversible reaction how does the speed of the forward reaction and backward reaction change over time?
• The forward reaction starts fast and gets slower over time. • The backward reaction starts slow and gets faster over time.
SC12a - Define Dynamic Equilibrium
When the forward and backward reactions in reversible reaction occur at the same rate.
SC12a - What happens to the amount of products and reactants produced once a reaction has reached Dynamic Equilibrium?
They stop changing (increasing or decreasing)
SC12a - What is required for Dynamic Equilibrium to be achieved, and why?
• A closed system. • In an open system fluids can escape and equilibrium cannot be reached
SC12a - What is the name and the chemical formula of the process that creates ammonia?
• The Harber Process: • N2(g) + 3H2(g) ⇌ 2NH3(g)
SC12a - What is the temperature, pressure and catalyst used during the Harber Process?
• T: 450° • P: 200 Atmospheres (atm) • C: Iron Catalyst