QUESTION 12 For the reaction A ® B, the rate law is A[B] - k[A]. At What are the units of the rate constant where time is measured in seconds? 1 Ob. M².s Oc. M M d. S Oe. Ms
The reaction B ➔ products follows the rate law Rate = k [B]2. If the initial concentration of B is 0.400 M, it requires 100 seconds for [B] to fall to 0.200 M. The additional reaction time (in seconds) that is required for [B] to reach 0.100 M is A. 125 B. 175 C. 100 D. 150 E. 200
Iwo experiments were performed to determine the rate law for the reaction shown below. In both experiments [A] was measured as a function of time in seconds; in experiment 1, 0.200 M B was used and in experiment 2, 0.400 M B was used. In both experiments, the graph of [A] vs time was linear; the slopes of those lines are given in the table. 4. A+B AB Exp Initial [B] (M) Slope of [A] vs time 1 -0.00354 0.200...
The reaction A + 2B → C proceeds according to the rate law, rate = k[A][B] with k = 6.05 x 10-3 M-1 min-1. Assume that at the start of a particular reaction, [A] = 0.275 M, [B] = 0.0950 M. What is the initial rate of reaction? What is the rate when half of B has reacted? Give units! [Remember: ln(ab) = ln(a) + ln(b)]
2) 16 marks] Consider the reaction 4A+ B+ 2C D +3E where the rate law is defined as d[B] k[A][B][C]3 dt An experiment is carried out where [A]o = [C]o = 2.00 M and [Blo = 1.00 x 103 M If after 200. seconds, [B] = 2.35 x 10-5 M. (a) Calculate the value of k (b) Calculate the half-time for this experiment. 2) 16 marks] Consider the reaction 4A+ B+ 2C D +3E where the rate law is defined...
The following reaction was monitored as a function of time: AB→A+B A plot of 1/[AB] versus time yields a straight line with slope 5.8×10−2 (M⋅s)−1 . You may want to reference (Page) section 13.4 while completing this problem. Part A Part complete What is the value of the rate constant (k) for this reaction at this temperature? Express your answer using two significant figures. -- SubmitPrevious AnswersRequest Answer Part B Part complete Write the rate law for the reaction. --...
For a reaction that follows the general rate law, rate = k[A]2 [B], what will happen to the rate of reaction if the concentration of A is increased by a factor of 4 and B is increased by a factor of 2? 1) (3 points) For a reaction that follows the general rate law, rate = k[A]”[B], what will happen to the rate of reaction if the concentration of A is increased by a factor of 4 and B is...
The differential rate law for a reaction is rate = k [A] [B]. If the rate of reaction is 0.000730 and the concentrations are [A] = 0.847 M and [B] = 0.874 M, what is the value of the rate constant? Select one: a. 0.00113 b. 8.89e-4 C. 0.00116 d. 9.86e-4 e. 7.53e-4
The following reaction was monitored as a function of time: AB→A+B A plot of 1/[AB] versus time yields a straight line with slope 5.7×10−2 (M⋅s)−1 . 1) What is the value of the rate constant (k) for this reaction at this temperature? Express your answer using two significant figures. _____M-1S-1 2)Write the rate law for the reaction. Rate=k Rate=k[AB] Rate=k[AB]2 Rate=k[AB]3 3) What is the half-life when the initial concentration is 0.57 M ? Express your answer using two significant...
The rate law for the reaction 2NO2 + O3 → N2O5 + O2 is rate = k[NO2][O3]. Which one of the following mechanisms is consistent with this rate law? A) NO2 + NO2 → N2O4 (fast) N2O4 + O3 → N2O5 + O2 (slow) B) NO2 + O3 → NO5 (fast) NO5 + NO5 → N2O5 + 5/2O2 (slow) C) NO2 + O3 → NO3 + O2 (slow) NO3 + NO2 → N2O5 (fast) D) NO2 + NO2 → N2O2...