Equilibrium Constant and Its Applications
Chemistry ⇒ Chemical Kinetics and Equilibrium
Equilibrium Constant and Its Applications starts at 11 and continues till grade 12.
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A reaction has Kc = 1.5 × 103 at 298 K. Is the reaction product-favored or reactant-favored at this temperature?
For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), write the expression for Kp.
For the reaction H2(g) + I2(g) ⇌ 2HI(g), if Kc = 50 at 400°C, what is the value of Kc for the reaction 2HI(g) ⇌ H2(g) + I2(g) at the same temperature?
For the reaction: 2A(g) ⇌ B(g) + C(g), if Kc = 0.25 and at equilibrium [A] = 0.4 mol·dm-3, [B] = [C] = 0.2 mol·dm-3, verify if the system is at equilibrium.
A reaction has Kc = 1.5 × 103 at 298 K. Is the reaction product-favored or reactant-favored at this temperature?
For the reaction: 2A(g) ⇌ B(g) + C(g), if Kc = 0.25 and at equilibrium [A] = 0.4 mol·dm-3, [B] = [C] = 0.2 mol·dm-3, verify if the system is at equilibrium.
For the reaction: 2A(g) ⇌ B(g) + C(g), if the initial concentration of A is 1.0 mol·dm-3 and at equilibrium [A] = 0.6 mol·dm-3, calculate the equilibrium concentrations of B and C.
For the reaction: 2HI(g) ⇌ H2(g) + I2(g), if Kc = 0.02 at 700 K, what is the value of Kc for the reaction: H2(g) + I2(g) ⇌ 2HI(g)?
Which of the following changes will affect the value of the equilibrium constant?
(1) Change in concentration
(2) Change in pressure
(3) Change in temperature
(4) Addition of a catalyst
Which of the following expressions correctly represents the equilibrium constant (Kc) for the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)?
(1) Kc = [NH3]2 / ([N2][H2]3)
(2) Kc = [N2][H2]3 / [NH3]2
(3) Kc = [NH3] / ([N2][H2])
(4) Kc = [N2][H2] / [NH3]
Which of the following is NOT a correct statement about equilibrium?
(1) The forward and reverse reactions occur at the same rate
(2) The concentrations of reactants and products are constant
(3) The reaction has stopped
(4) The value of Kc is constant at a given temperature
Which of the following is NOT included in the equilibrium constant expression?
(1) Gases
(2) Aqueous solutions
(3) Pure solids
(4) Pure liquids
Fill in the blank: For a homogeneous equilibrium involving gases, the equilibrium constant in terms of partial pressures is denoted as __________.
Fill in the blank: The equilibrium constant for a reaction at a given temperature is __________ of the initial concentrations of reactants and products.
Fill in the blank: The equilibrium constant for a reaction is only affected by __________.
Fill in the blank: The relationship between Kp and Kc is given by Kp = Kc(RT)Δn, where Δn is __________.
State whether the following statement is true or false: The value of Kc is affected by the addition of an inert gas at constant volume.
State whether the following statement is true or false: The value of Kp is always equal to the value of Kc.
True or False: The addition of a catalyst changes the value of the equilibrium constant.
True or False: The equilibrium constant expression includes only those species whose concentrations can change.
