Equilibrium & Keq Practice

Front

What is the equilibrium expression for the reaction: 2H₂O₂(aq) ⇋ 2H₂O(l) + O₂(g)?

Back

[O₂] / [H₂O₂]²

Front

What is the equilibrium expression for: Fe₃O₄(s) + 4H₂(g) ⇋ 3Fe(s) + 4H₂O(g)?

Back

[H₂O]⁴ / [H₂]⁴

Front

How can equilibrium be reached in a reversible chemical reaction?

Back

Stopper the flask.

Front

What is the condition for a system to be in chemical equilibrium?

Back

The rate of the forward reaction equals the rate of the backward reaction.

Front

Which statement is NOT true at equilibrium?

Back

The concentration of the reactants is equal to the concentration of the products.

Front

Define Chemical Equilibrium.

Back

A state in a reversible reaction where the rates of the forward and reverse reactions are equal.

Front

What happens to the concentrations of reactants and products at equilibrium?

Back

They remain constant over time.

Front

What is Le Chatelier's Principle?

Back

If a system at equilibrium is disturbed, the system will shift in a direction to counteract the disturbance.

Front

What effect does increasing the temperature have on an exothermic reaction at equilibrium?

Back

It shifts the equilibrium to the left, favoring the reactants.

Front

What is the significance of the equilibrium constant (K_eq)?

Back

It quantifies the ratio of concentrations of products to reactants at equilibrium.