When [A] is doubled, the rate doubles; when [B] is doubled, the rate quadruples; when [C] is doubled, the rate does not change. How would the rate change if the concentration of A and C are doubled when the concentration of B is tripled? A(g) + B(g) + C(g) => products   A) The rate decreases by a factor of 4. B) The rate decreases by a factor of 2. C) The rate increases by a factor of 2. D) The rate increases by a factor of 4. E) The rate increases by a factor of 8. F) The rate increases by a factor of 16. G) The rate increase by a factor of 18. H) The rate does not change.

49. Assume that 2 A + B →C is the rate determining step. 3.0 moles of A and 2.0 moles of B are placed in a 1.0-L flask; after five minutes the concentration of C reaches 1.0 M and the rate will have (A) decreased by a factor of 6 (B) decreased by a factor of 9 (C) decreased by a factor of 10 (D) decreased by a factor of 18

The reaction 4 HBr(g) + O2(g)  2 H2O(g) + 2 Br2(g) was studied at a certain temperature with the following results:   Experiment [HBr(g)] (M) [O2(g)] (M) Rate (M/s)   1 0.00542 0.00542 0.341 2 0.00542 0.0108 0.679 3 0.0108 0.00542 0.679 4 0.0108 0.0108 1.35 (a) What is the rate law for this reaction? Rate = k [HBr(g)] [O2(g)] Rate = k [HBr(g)]2 [O2(g)]     Rate = k [HBr(g)] [O2(g)]2 Rate = k [HBr(g)]2 [O2(g)]2 Rate = k [HBr(g)] [O2(g)]3 Rate = k [HBr(g)]4 [O2(g)] (b) What is the value of the rate constant? (c) What is the reaction rate when the concentration of HBr(g) is 0.00861 M and that of O2(g) is 0.0123 M if the temperature is the same as that used to obtain the data shown above? _________M/s

14. The combustion of ethane (C,H,) is represented by the equation: 2C,H.(g) + 70.(g) ) In this reaction: 4CO.(g) +6H,0(I) (a) the rate of consumption of ethane is seven times faster than the rate of consumption of oxygen. (b) the rate of formation of CO, equals the rate of formation of water. (c) water is formed at a rate equal to two-thirds the rate of formation of CO,2. (d) the rate of consumption of oxygen equals the rate of consumption of water. (e) CO, is formed twice as fast as ethane is consumed.