Multiple Choice
Given the reaction 2COF2(g) ⇌ CO2(g) + CF4(g) with an equilibrium constant Kp = 2.2 × 10^6 at 298 K, what is the equilibrium constant Kp for the reaction 4COF2(g) ⇌ 2CO2(g) + 2CF4(g)?
16. Chemical Equilibrium
Equilibrium Constant Calculations
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the equilibrium constant expression for the reaction Fe(OH)3(s) + C2O42− ⇌ [Fe(C2O4)3]3−(aq) + OH−?
A
K_eq = [Fe(C2O4)3]3−[OH−]/[C2O42−]
B
K_eq = [Fe(C2O4)3]3−[OH−]
C
K_eq = [Fe(C2O4)3]3−/[OH−]
D
K_eq = [Fe(C2O4)3]3−[OH−][Fe(OH)3]
Verified step by step guidance1
Identify the phases of each species in the reaction. Fe(OH)3 is a solid, C2O42− is an aqueous ion, [Fe(C2O4)3]3− is an aqueous complex, and OH− is an aqueous ion.
Recall that the equilibrium constant expression, K_eq, only includes species in the aqueous or gaseous phase. Solids and pure liquids are not included in the expression.
Write the general form of the equilibrium constant expression: K_eq = [products] / [reactants].
Apply the rule from step 2 to exclude Fe(OH)3 from the expression since it is a solid.
Construct the equilibrium constant expression: K_eq = [Fe(C2O4)3]3−[OH−] / [C2O42−].
2:38mWatch next
Master Equilibrium Constant Calculation with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Equilibrium Constant Calculations practice set
Problem sets built by lead tutorsExpert video explanations