2. Which of the following is true regarding the concentration of products, for a chemical reaction that is already at equilibrium, assuming no disruptions to the equilibrium?

7. The equilibrium constant for the formation of hydrogen iodide from hydrogen and iodine is 45 at a certain temperature.

H2(g) + I2(s) <=> 2 HI(g) K = 45.

Which of the following is true regarding this equilibrium?

I. The reaction is product favored.

II. The reaction is reactant favored.

III. Equilibrium lies to the right.

IV. Equilibrium lies to the left.

35. A reaction X + 2Y → 3Z is started with 1.0 M Z and no X or Y. To calculate the equilibrium concentrations of all species using an ICE table, which of the following would you enter in the Z column for the C row?

51. Increasing the temperature of an exothermic reaction results in __________

1. Which of the following is true for a chemical reaction at equilibrium?

Many reactions occur in the formation of photochemical smog, including the reaction of ozone with various volatile organic chemicals, or VOCs. The table in the next column shows the Arrhenius expression for four such reactions.

Identify the highest rate constant at 25 ^oC among the Arrhenius equations above. 

The following rate constants were obtained in an experiment in which the decomposition of gaseous N₂O₅ was studied as a function of temperature. The products were NO₂ and NO₃.

   T (^oC)           k (s^-1)       

   41            0,31

   88            7,3

Determine Ea for this reaction in kJ/mol.  

33. In the ICE table started for calculating equilibrium concentrations of the reaction shown, the three terms in the “change” row are __________

14. For the reaction 2A + B <=> 2C the appropriate form for the equilibrium constant expression is:

5. An equilibrium that strongly favors products has __________