Chemical Equilibrium

Front

What is chemical equilibrium?

Back

Chemical equilibrium is the state in a reversible reaction where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.

Front

What effect does a catalyst have on chemical equilibrium?

Back

A catalyst speeds up the rate of both the forward and reverse reactions equally, thus having no effect on the position of the equilibrium.

Front

What happens to the equilibrium position when the concentration of a reactant is increased?

Back

The equilibrium will shift to the right, favoring the formation of products.

Front

What is Le Chatelier's Principle?

Back

Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.

Front

How does increasing pressure affect equilibrium in a gaseous reaction?

Back

Increasing pressure shifts the equilibrium towards the side with fewer moles of gas.

Front

What is the effect of temperature on an exothermic reaction at equilibrium when heat is added?

Back

Adding heat to an exothermic reaction shifts the equilibrium to the left, favoring the reactants.

Front

What is the effect of temperature on an endothermic reaction at equilibrium when heat is added?

Back

Adding heat to an endothermic reaction shifts the equilibrium to the right, favoring the products.

Front

What happens to the concentration of products if the equilibrium shifts to the left?

Back

The concentration of products will decrease.

Front

What is the relationship between the equilibrium constant (K) and the concentrations of reactants and products?

Back

The equilibrium constant (K) is the ratio of the concentrations of products to reactants, each raised to the power of their coefficients in the balanced equation.

Front

What does it mean if K > 1 for a reaction at equilibrium?

Back

If K > 1, it indicates that at equilibrium, the concentration of products is greater than that of reactants.