Chemical Equilibrium Quiz

What does the equilibrium position refer to when it is said to lie to the right?

• The reaction favors the reactants.

• The reaction favors the products.

• The concentrations of all reactants and products are equal.

• The reaction is not occurring.

What is the equilibrium constant expression for the reaction jA + kB ⇌ lC + mD?

• Kc = [A]^j[B]^k / [C]^l[D]^m

• Kc = [C]^l[D]^m / [A]^j[B]^k

• Kc = [A]^l[B]^m / [C]^j[D]^k

• Kc = [C]^j[D]^k / [A]^l[B]^m

What happens to the value of K for a reaction at a specific temperature if the balanced equation for the reaction is multiplied by a factor X?

• The value of K will be divided by X.

• The value of K will remain the same.

• The value of K will be multiplied by X.

• The value of K will be raised to the power of X.

What must you remember about the equilibrium constant (K)?

If the reaction is reversed, what happens to the equilibrium constant (K)?

• K remains unchanged.

• K is squared.

• K is the reciprocal of the original value.

• K is halved.

At equilibrium, what is true about the concentrations of reactants and products?

• They remain constant with time.

• They are all equal to each other.

• They decrease to zero.

• They keep fluctuating widely.

How can Kc be obtained from the old Kc for the reaction 4HI(g) ⇌ 2H2(g) + 2I2(g)?

• By taking the square root of the old Kc

• By raising the old Kc to the second power

• By taking the reciprocal of the old Kc

• By dividing the old Kc by 2

What is the value of Kc for the reaction H2(g) + I2(g) ⇌ 2HI(g), given the Kc for the reverse reaction is 0.12?

• 0.014

• 8.3

• 0.12

• 1/0.12

What does Kp involve in equilibrium expressions?

• Masses

• Concentrations

• Pressures

• Volumes

What is the relationship between Kc and Kp?

• Kp = Kc(RT)Δn

• Kp = Kc/(RT)Δn

• Kp = Kc + (RT)Δn

• Kp = Kc - (RT)Δn