Equilibrium

What is dynamic equilibrium

In a closed system, when forward and reverse reaction rates are equal, so concentrations of reactants and products remain constant

What effect does temperature have on exothermic reactions

• Increasing temperature decreases product yield, and kc and kp decrease

• Decreasing temperature increases product yield kc and kp increases

What effect does temperature have on endothermic reactions

• Increasing temperature increases product yield, kc and kp increase

• Decreasing temperature decreases product yield, kc and kp decrease

What effect does a catalyst have on kc and kp

Does not change equilibrium position, equilibrium yield of kc and kp

What

What is homogeneous equilibrium

All species are the same state at equilibria

What is heterogenous equilibrium

Species are at different state at equilibria, conc. of solids and liquid are omitted from kc expression

What does the position of K tell you

• K=1 indicates equilibrium is half way

• K= 100 indicates equilibrium is in favour of products

• K= 1×10^-2 indicates equilibrium favours the reactants