Equilibrium

What does the equilibrium constant (Kc) represent in a chemical reaction?

For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), if Kc = 4.5 × 10^−5 at 500 K, what does this indicate?

Which of the following changes will NOT affect the equilibrium position of a reaction?

In the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), what will happen if the volume of the container is decreased?

For the reaction: A(g) + B(g) ⇌ C(g) + D(g), the equilibrium constant Kc is 10 at 300 K. If initial concentrations of A and B are 1 M each and no C or D is present initially, what will be the concentration of C at equilibrium?

Which of the following statements is TRUE according to Le Chatelier's principle?

The reaction 2HI(g) ⇌ H2(g) + I2(g) is endothermic. What will be the effect of increasing temperature on the value of Kc?

In the reaction: CO(g) + 2H2(g) ⇌ CH3OH(g), if the equilibrium constant Kc = 50, what is the expression for Kc?

Which of the following is NOT a characteristic of dynamic chemical equilibrium?

For the reaction: PCl5(g) ⇌ PCl3(g) + Cl2(g), ΔH is positive. Predict the effect of decreasing temperature on the equilibrium position.