Law of Mass Action
Chemistry ⇒ Chemical Kinetics and Equilibrium
Law of Mass Action starts at 11 and continues till grade 12.
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Explain the significance of the equilibrium constant derived from the Law of Mass Action.
Explain why pure solids and pure liquids are not included in the equilibrium constant expression.
Explain why the Law of Mass Action does not apply to reactions involving non-ideal solutions.
For the reaction 2NO2(g) ⇌ N2O4(g), if Kc = 0.5 at a certain temperature, what does this indicate about the position of equilibrium?
For the reaction 2A + B ⇌ 3C, if [A]=0.1 M, [B]=0.2 M, [C]=0.3 M at equilibrium, calculate Kc.
For the reaction 2A ⇌ B, if the initial concentration of A is 1.0 M and at equilibrium 0.6 M of A remains, calculate the equilibrium concentration of B.
For the reaction 2NO2(g) ⇌ N2O4(g), if Kc = 0.5 at a certain temperature, what does this indicate about the position of equilibrium?
For the reaction A + 2B ⇌ C, if the initial concentrations are [A]=1.0 M, [B]=2.0 M, and at equilibrium [C]=0.5 M, calculate the value of Kc.
For the reaction 2A + B ⇌ 3C, the rate of the forward reaction is proportional to: (1) [A][B] (2) [A]2[B] (3) [C]3 (4) [A][B]2
If the concentration of a reactant is doubled, according to the Law of Mass Action, the rate of reaction will: (1) Double (2) Remain the same (3) Increase four times (4) Decrease
If the equilibrium constant Kc for a reaction is 1 × 105, the reaction is considered to be: (1) Product-favored (2) Reactant-favored (3) At equilibrium (4) Slow
If the value of Kc is much greater than 1, the reaction at equilibrium favors: (1) Reactants (2) Products (3) Both equally (4) Cannot be determined
For the reaction 2A ⇌ B + C, the equilibrium constant expression is Kc = ________.
In the Law of Mass Action, the exponents in the equilibrium constant expression are determined by the ________ of the balanced equation.
The equilibrium constant expression for the reaction: CaCO3(s) ⇌ CaO(s) + CO2(g) is Kc = ________.
The Law of Mass Action applies only to reactions in ________ state.
For the reaction aA + bB ⇌ cC + dD, the equilibrium constant expression is Kc = [C]^c [D]^d / [A]^a [B]^b. True or False?
The equilibrium constant for a reaction changes with temperature. True or False?
The equilibrium constant Kc for a reaction is 4.0 at 25°C. If the concentrations at equilibrium are [A]=0.5 M, [B]=0.5 M, and [C]=1.0 M for the reaction A + B ⇌ C, is the system at equilibrium?
The Law of Mass Action can be used to derive the expression for the equilibrium constant. True or False?
