CHEM 110 Midterm: CHEM 110 NIU CHEM110 Practice Exam 3 Key

TheTemperature Dependence of Chemical Equilibrium For an equilibrium reaction: the following graph was obtained 10 -110 0.002 0.004 0.006 .008 0.01 1/T RT Given the above relationship, use the graph to identify which of the following statements are "true" or "false" in this specific case All statements refer to the forward reaction (proceeding left to right, as given) corresponding to the equilibrium constant K.

For an equilibrium reaction A + 3 B艹4 C, the equilibrium constant KC-1 6x103 For the reaction 2 C 1/2 A +3/2 B, the value of equilibrium constant, Kc', is [Y]. (Fill in the blank. Show the value only Report with figures and do not use scientific notation) 800 QUESTION 6 Given a gas-phase reaction H2(9)129)2 H(g). The equilbrium constant of this reaction Kp 0654 At a certain moment of the reaction run, the partial pressures of gases in the react r on mixture are 0 127 atm for H2. 0.134 atm for 12, and 1.055 atm for HI Calculate the Op and answer the following questions The value of Op is 654 Is the reaction at equilibrium? no If your answer to the above question is Yes, skip this question Right to left (Fill in the blank, show the proper number of significant figures.) (Fl in the blankindicating Yes or No only.) If your answer is No, then in which direction does the reaction proceed? (Fill in the blank indicating Left to righ or Right to left only.) QUESTION 7 1 poi For the following reaction CO(g)+ Chig)-COCIg) + Cl(g) the rate constant of the forward reaction is 0013 M-1s-1 and the rate constant of the reverse reaction is 6.1 104M11. The value of equilibrium constant Ke for this reaction is [X) (Fill in the blank, show the number only: report with the proper number of significant fgures and do not use scientific notation.). do nat use scientific notation)