Which of the following statements about the equilibrium constant (K) is true?

The following picture represents the equilibrium state for the reaction A2 + B2 ⇌ 2AB (A = white; B = gray). What is the relationship between the rate constant for the forward reaction, kf, and the rate constant for the reverse reaction kr at equilibrium?

The following two isomers of C3H7NO exist in equilibrium with each other in solution: If K_c = 0.57 at 25°C and the initial concentration of the reactant is 0.50 M and the product is 0.70 M, what are the concentrations of the reactant and product at equilibrium?

The following two isomers of C3H7NO exist in equilibrium with each other in solution: If Kc = 0.57 at 25°C and the initial concentration of the reactant is 0.50 M and the product is 0.70 M, what is the concentration of the reactant at equilibrium?

For the reaction 2NO(g) ⇌ N2(g) + O2(g) at a temperature where Kc = 0.055, the initial concentration of NO is 0.0100 M with no N2 or O2 present. What is the equilibrium concentration of NO?

What is the equilibrium-constant expression for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g)?

What is the equilibrium-constant expression for the reaction 2Hg(l) + O2(g) ⇌ 2HgO(s)?

What is chemical equilibrium in a chemical reaction?

Which of the following expressions correctly represents the equilibrium constant (K) for the reaction: aA + bB ⇌ cC + dD?