Factors affecting equilibrium

Catalysts, pressure, temperature & concentration of solutions can affect equilibrium position of a reversible reaction. If the conditions of a reversible reaction are changed, the equilibrium will move to counteract that change. A catalyst increases the rate at which equilibrium is achieved. Increasing temperature increases the rate of both reactions; equilibrium shifts in favour of the endothermic reaction. Increasing the concentration or pressure of a substance increases the rate of reaction; equilibrium shifts in response.