20. Consider this cquilibrium N,(g) + H,(g) <=%====> NH,(g) + 94 kJ The equilibrium law expression for the balanced chemical equation would be a. N,J[H.J/[NH,] b. [NH,]/[H.J[N.] c. INH,J/[H,)][N,J d. INH,J/[H,J'IN] le. 2[NH,J/3[H.J'IN.]

26) Suppose that at a pressure of 1 atm and temperature 300 K, a given material has two possible phases: liquid (L) and solid (S). We start the system with N₁ = 5 moles in the liquid phase and Ng = 9 moles in the solid phase. For these values of pressure and temperature, PL = 5 x 10-21 J • Hs9 x 10-21 J. What is the equilibrium value of NL? a. 9 mol b. 14 mol c. 1.49 mol d. 5 mol e. O mol

For the reaction 2SO2(g) + O2g) 2SO3(2) If K. = 4.3 x 10° and the following concentrations are present: [SO2] = 0.010 M, [SO3] = 10 M, [O2] = 0.01 M. Which of the following statements is correct? A. The system is at equilibrium B. The system is not at equilibrium and is shifting from left to right C. The system is not at equilibrium and is shifting from right to left D. There is not enough information E. The system is at equilibrium and is shifting from left to right 3.

For the following reaction PCI3 (g) + Cl2 (g) + PCI5 (g) it was found that a 4.00L vessel at equilibrium contained 0.0148 mol PCI3, 0.0126 mol Cl,, and 0.991 mol of PCI5. a. Write an expression for Kc. b. Determine the value of K, for this reaction. Attach File Browse Local Files

2 CO₂ (g) = 2 CO (g) + O₂ (g) 1. Write the K. expression for this balanced equation. 2. If, at equilibrium, the concentrations of the reactants and products are as follows: [CO] = 0.00025 M, [0₂] = 0.00050, [CO₂] = 0.25 M, calculate the value for Kc. 3. Where does the equilibrium lie, towards the products or reactants? How can you know?

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What is the equilibrium expression for the reaction below? Fe203(s) + 3CO(g) = 2Fe(s) + 3CO2(g) а. [Fe,0, |[co] K. [Fe] [co,] b. [co]* [co,]° [co,]° [co] K. С. K. C d. [Fe] [co, ]° K. [Fe,O, ][co]

Consider the equilibrium, 2 NO (g) N2₂ (g) + O₂ (g), 2 for which AH = -180 kJ mol-1. How will adding more N₂ (g) affect an equilibrium mixture of the three gases? Select one: a. Reaction will proceed to the right (in the forward direction) to generate more product. b. Reaction will proceed to the left (in the reverse direction) to generate more product. C. Reaction will proceed to the right (in the forward direction) to generate more reactant. d. Reaction will proceed to the left (in the reverse direction) to generate more reactant. e. There will be no change to equilibrium mixture.

A mixture of 0.422 M H,, 0.376 M I,, and 0.913 M HI is enclosed in a vessel and heated to 430 °C. H,(g) + 1,(g) = 2 HI(g) K. = 54.3 at 430 °C Calculate the equilibrium concentrations of each gas at 430 °C. [H,] = M L] = M [HI] = M