9. Which statement is FALSE? a. A catalyst is not consumed in the net reaction. b. The rate constant, k, may change with a change in temperature. c. Individual reactant orders must be determined from data, not from inspection of equation coefficients. d. Every reactant will appear in the reaction's rate law. e. The reactant orders may be different from the equation coefficients. 10. The following chart is rate data for the reaction, 2X+2YZ. Which statement is TRUE? I. The overall reaction order is 4 . II. It is impossible to determine the rate expression for this reaction III. If you were to triple the [Y], the rate would be 9 times faster IV. X is a first order reactant a. I, IV only b. IV only c. I, II, IV only d. II, IV only e. I thru IV are all true