
Gas-phase Equilibrium Constant Quiz

Quiz
•
Chemistry
•
12th Grade
•
Easy
Shawn Gray
Used 1+ times
FREE Resource
6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For gas-phase solutions, the equilibrium constant (K) may be expressed in terms of which quantities?
Molar concentrations (Kc) only
Partial pressures (Kp) only
Both molar concentrations (Kc) and partial pressures (Kp)
Neither molar concentrations nor partial pressures
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expression for the equilibrium constant Kc for the dissolution of PbCl2(s) in water?
Kc = [Pb^2+][Cl^-]^2
Kc = [Pb^2+][Cl^-]
Kc = [Pb^2+]^2[Cl^-]^2
Kc = 1/[Cl^-]^2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expression for the equilibrium constant Kc for the reaction of CaO(s) with CO2(g) to form CaCO3(s)?
Kc = [CaO][CO2]
Kc = 1/[CO2]
Kc = [CaCO3]
Kc = [CO2]
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the value of the equilibrium constant (Kc) change with an increase in temperature for an exothermic reaction?
It increases
It decreases
It remains constant
It first increases, then decreases
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of adding a catalyst on the equilibrium constant (Kc) for a reaction at constant temperature?
It increases Kc
It decreases Kc
It does not affect Kc
It initially decreases, then increases Kc
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the reaction 2A(g) + B(g) ⇌ 3C(g), what is the expression for the equilibrium constant Kp in terms of partial pressures?
Kp = (P_C)^3 / (P_A)^2(P_B)
Kp = (P_A)^2(P_B) / (P_C)^3
Kp = (P_C)^2 / (P_A)(P_B)^3
Kp = (P_A)(P_B)^2 / (P_C)^3
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