Multiple Choice
Given the equilibrium reactions:A(g) + B2(g) <==> AB(g) + B(g) with KC = 4AB(g) <==> A(g) + B(g) with KC = 0.5What is the equilibrium constant (KC) for the following reaction?2A(g) + B2(g) <==> 2AB(g)
16. Chemical Equilibrium
Equilibrium Constant Calculations
Back16. Chemical Equilibrium
Equilibrium Constant Calculations
- Multiple ChoiceGiven the equilibrium CO(g) + H2O(g) ⇌ CO2(g) + H2(g) with an equilibrium constant (Keq) of 302 at 600K, what is the equilibrium constant for the reverse reaction CO2(g) + H2(g) ⇌ CO(g) + H2O(g) at the same temperature?1views
- Multiple Choice
For the reaction below, Kc = 1.5 at a constant temperature. A 3.2 L flask contains an equilibrium mixture of 3 compounds: 3.7 g of NH4HS, 70. g of NH3 and unknown amount of H2S. What is the mass (grams) of H2S produced at equilibrium?
NH4HS(s) ⇌ NH3(g) + H2S(g)
2views - Multiple ChoiceConsider the following reaction: 2CH4(g) ⇌ C2H2(g) + 3H2(g). The reaction of CH4 is carried out at some temperature with an initial concentration of [CH4] = 0.089 M. At equilibrium, the concentration of H2 is 0.010 M. Find the equilibrium constant (Kc) for the reaction.
- Multiple ChoiceWhat is the equilibrium constant expression for the reaction Fe(OH)3(s) + C2O42− ⇌ [Fe(C2O4)3]3−(aq) + OH−?
- Multiple ChoiceGiven the equilibrium expression 0.0611 = x^2 / ((1370 - x)(1710 - x)), what is the value of x at equilibrium?
- Multiple ChoiceFor the reaction CO (g) + Cl2 (g) ⇌ COCl2 (g) with Kc = 255 at 1000 K, if a reaction mixture initially contains a CO concentration of 0.1450 M and a Cl2 concentration of 0.176 M at 1000 K, what is the equilibrium concentration of CO?
- Multiple ChoiceWhich of the following expressions represents the equilibrium constant (K) for the dissolution of urea in water, given the mass of urea and the initial and final temperatures?
- Multiple ChoiceWhat is the equilibrium expression for the reverse photosynthetic conversion of CO2 and O2, given the reaction: 6CO2(g) + 6H2O(l) ⇌ C6H12O6(s) + 6O2(g)?
- Multiple ChoiceFor the reaction CO (g) + Cl2 (g) ⇌ COCl2 (g) with Kc = 255 at 1000 K, if the initial concentrations are [CO] = 0.1510 M and [Cl2] = 0.175 M, what is the equilibrium concentration of COCl2?
- Multiple ChoiceThe decomposition of ammonia is: 2NH3(g) -> N2(g) + 3H2(g). If the pressure of ammonia is 1.0 × 10^-3 atm, and the pressures of N2 and H2 are each 0.20 atm, what is the value of Kp' at 400°C for the reverse reaction?
- Multiple ChoiceGiven the equilibrium reaction: H₂C₂O₄ ⇌ 2H⁺ + C₂O₄²⁻, calculate the equilibrium concentration of C₂O₄²⁻ in a 0.20 M solution of oxalic acid, assuming the acid dissociates completely. The equilibrium constant, Kₐ, for the first dissociation is 5.5 x 10⁻².1views
- Multiple ChoiceConsider the reaction, which takes place at a certain elevated temperature: CO(g) + NH3(g) ⇌ HCONH2(g), Kc = 0.690. If a reaction vessel initially contains only CO and NH3 at concentrations of 1.00 M and 2.00 M, respectively, what will be the concentration of HCONH2(g) at equilibrium?
- Multiple Choice
The reaction: 2 NO(g) + Br2(g) ⇌ 2 NOBr(g), has a Kp of 2.5 x 102 at 35°C. Calculate the equilibrium concentration of NOBr, if equilibrium concentrations of NO and Br2 are 0.2 atm and 0.050 atm, respectively.
3views - Multiple ChoiceGiven the equilibrium reaction CO2(g) ⇌ CO2(aq) with an equilibrium constant Kc of 0.83, what is the concentration of aqueous CO2 if the concentration of gaseous CO2 is 1.0 M?