Chemistry Chapter 15: Chemical Equilibrium

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What is the relationship between the equilibrium constant Kp and Kc?

Kp = Kc / (RT)∆n
Kp = Kc (RT)∆n (correct)
Kp = Kc + (RT)∆n
Kp = Kc - (RT)∆n

What does a value of K >> 1 indicate about the reaction?

The reaction is irreversible
The reaction is at equilibrium
The reaction is product-favored (correct)
The reaction is reactant-favored

Why does the equilibrium constant remain the same regardless of the initial concentrations of reactants and products?

Because the reaction is at a fixed temperature
Because the equilibrium constant is a ratio of concentrations (correct)
Because the reaction is reversible
Because the reaction rate is independent of concentration

What is the significance of ∆n in the equation Kp = Kc (RT)∆n?

It represents the difference in moles of gaseous reactants and products (A) Signup and view all the answers

What happens to the equilibrium when K < 1?

The equilibrium shifts to the left (C) Signup and view all the answers

What is the implication of the equilibrium constant being the same regardless of the direction of the reaction?

The reaction is reversible, and can be reached from either direction (D) Signup and view all the answers

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

The forward and reverse reactions are proceeding at the same rate (B) Signup and view all the answers

What is the relationship between the rate constants kf and kr at equilibrium?

kf / kr = Keq (B) Signup and view all the answers

What is the equilibrium expression for the reaction aA + bB cC + dD?

Keq = [C]c[D]d / [A]a[B]b (A) Signup and view all the answers

What is the purpose of the double arrow in a chemical equation at equilibrium?

To indicate that the reaction is reversible (B) Signup and view all the answers

What is the relationship between the equilibrium constants Kc and Kp?

Kc = Kp (D) Signup and view all the answers

What is the rate law for the forward reaction N2O4 (g) 2 NO2 (g)?

Rate = kf [N2O4] (D) Signup and view all the answers

When a system at equilibrium is disturbed by a change in temperature or pressure, what happens to the equilibrium position?

It shifts to counteract the effect of the disturbance (C) Signup and view all the answers

What is the effect of adding more of a reactant to a system in equilibrium?

The equilibrium shifts to the right (A) Signup and view all the answers

What is the purpose of removing ammonia (NH3) from the system in the Haber Process?

To shift the equilibrium to the right (A) Signup and view all the answers

What is the effect of a catalyst on a system in equilibrium?

It increases the rate of both the forward and reverse reactions (B) Signup and view all the answers

What happens to the equilibrium constant (K) when the temperature of a system is increased?

It remains constant (A) Signup and view all the answers

What is the relationship between the equilibrium constant (K) and the rate of the forward reaction?

K is independent of the rate of the forward reaction (B) Signup and view all the answers