Which of the following set of acids and conjugate bases would buffer most effectively at pH = 4.75?

A reaction mixture contains 0.139 M I2, 0.0392 M Cl2, and 0.222 M ICl for the reaction shown below: I2(g) + Cl2(g) ⇌ 2ICl(g)              KC = 9.04 at 298 K Show all your work and setup for credit. A) Calculate QC for the reaction. B) Is the reaction at equilibrium? C) If the reaction is not at equilibrium, will it proceed to form more reactants or more product?

Given the following data, determine the rate law for the following reaction. 2A + B + 2C → products Experiment [A] [B] [C] Rate (M/s) 1 0.273 0.763 0.400 3.0 2 0.819 0.763 0.400 9.0 3 0.273 1.526 0.400 12.0 4 0.273 0.763 0.800 6.0

Select the substance with the stronger dispersion force from each of the following pairs. 1) Cl2 or Br2 [a] 2) CO2 or CS2 [b] 3) SiCl4 or CF4 [c]

What is the boiling point of a solution prepared by dissolving 320.0 g of S8 (molar mass = 256.5 g/mol) in 1500.0 g of CCl4? (Kb = 5.05oC/m, boiling point of pure CCl4 = 76.7oC)

Consider the following 1.0 M aqueous solutions: A) HClO(aq) B) NaOH(aq) C) HNO3(aq) D) NH3(aq) Rank the aqueous solutions from the highest pH to the lowest pH. highest pH —–> [1] [2] [3] lowest pH —–> [4]  

For the reaction , N2(g) + 3H2(g) → 2NH3(g), the rate of formation of NH3 is 0.345 M/s. What is the corresponding rate of disappearance of N2 ?

Consider the following equilibrium: CO(g) + H2O(g) ⇌ H2(g) + CO2(g)   Kc = 16 Suppose that 1.50 mol of CO  and 1.50 mol of H2O are placed in 0.500 L flask and allowed to come to equilibrium at high temperature. A) Calculate the equilibrium concentration of CO2(g) [a] mol/L B) Calculate the equilibrium concentration of H2O (g) [b] mol/L C) Calculate the equilibrium concentration of H2(g) [c] mol/L D) Calculate the equilibrium concentration of CO (g) [d] mol/L

Consider the following equilibrium: CO(g) + H2O(g) ⇌ H2(g) + CO2(g)   Kc = 16 Suppose that 1.00 mol of CO  and 1.00 mol of H2O are placed in 0.500 L flask and allowed to come to equilibrium at high temperature. A) Calculate the equilibrium concentration of CO2(g) [a] mol/L B) Calculate the equilibrium concentration of H2O (g) [b] mol/L C) Calculate the equilibrium concentration of H2(g) [c] mol/L D) Calculate the equilibrium concentration of CO (g) [d] mol/L

For the reaction , N2(g) + 3H2(g) → 2NH3(g), the rate of formation of NH3 is 0.345 M/s. What is the corresponding rate of disappearance of H2 ?