Equilibrium constant Kp for homogeneous systems (A-level only) (3.1.10) | AQA A-level Chemistry - (7405) | KnowledgeSet

Equilibrium constant Kp for homogeneous systems (A-level only)

Chemistry · A-Level · AQA · AQA A-level Chemistry - (7405) · Specification point · 3.1.10 · Physical chemistry

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3.1.10 Equilibrium constant Kp for homogeneous systems (A-level only)

The further study of equilibria considers how the mathematical expression for the equilibrium constant K ₚ enables us to calculate how an equilibrium yield will be influenced by the partial pressures of reactants and products. This has important consequences for many industrial processes.

Content	Opportunities for skills development
$The equilibrium constant Kₚ is deduced from the equation for a reversible reaction occurring in the gas phase. Kₚ is the equilibrium constant calculated from partial pressures for a system at constant temperature. Students should be able to: derive partial pressure from mole fraction and total pressure construct an expression for Kₚ for a homogeneous system in equilibrium perform calculations involving Kₚ predict the qualitative effects of changes in temperature and pressure on the position of equilibrium predict the qualitative effects of changes in temperature on the value of Kₚ understand that, whilst a catalyst can affect the rate of attainment of an equilibrium, it does not affect the value of the equilibrium constant.$

Content

Opportunities for skills development

The equilibrium constant Kₚ is deduced from the equation for a reversible reaction occurring in the gas phase. Kₚ is the equilibrium constant calculated from partial pressures for a system at constant temperature. Students should be able to: derive partial pressure from mole fraction and total pressure construct an expression for Kₚ for a homogeneous system in equilibrium perform calculations involving Kₚ predict the qualitative effects of changes in temperature and pressure on the position of equilibrium predict the qualitative effects of changes in temperature on the value of Kₚ understand that, whilst a catalyst can affect the rate of attainment of an equilibrium, it does not affect the value of the equilibrium constant.