Law of Mass Action
Chemistry ⇒ Chemical Kinetics and Equilibrium
Law of Mass Action starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Law of Mass Action.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
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 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 2SO2(g) + O2(g) ⇌ 2SO3(g), write the expression for Kc.
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 A + B ⇌ C + D, if the equilibrium concentrations are [A]=0.2 M, [B]=0.3 M, [C]=0.4 M, [D]=0.5 M, calculate Kc.
For the reaction A + B ⇌ C, if Kc = 10 and [A]=0.2 M, [B]=0.2 M, what must be the equilibrium concentration of C?
For the reaction H2(g) + I2(g) ⇌ 2HI(g), if [H2] = 0.2 M, [I2] = 0.2 M, and [HI] = 0.4 M at equilibrium, calculate Kc.
For the reaction X + Y ⇌ Z, if the equilibrium constant Kc = 0.01, which side is favored at equilibrium?
If the concentration of a product is increased at equilibrium, what will happen to the value of Kc?
State the Law of Mass Action.
Write the equilibrium constant expression for the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g).
