The reaction
2NO2 → 2NO + O2
obeys the rate law:
rate = 1.4 x 10-2[NO2]2 at 500 K .
What would be the rate constant at 310 K if the activation energy is 80. kJ/mol? This is a second order reaction, giving k the units of M-1S-1 This will not change with the change in temperature. Do not include units in your answer. Exponential numbers need to be entered like this: 2 E-1 means 2 x 10-1.
The rate constant, k, at 310 K equals:
The reaction 2NO2 → 2NO + O2 obeys the rate law: rate = 1.4 x 10-2[NO2]2...
The elementary reaction 2NO2 (g) -> 2NO (g) + O2 (g) is second order in NO2 and the rate constant at 660 K is 5.23 M-1s-1. The reaction half-life at this temperature when [NO2]0 = 0.45 M is ____ s.
Given the reaction and following data: 2NO + O2 → 2NO2 Calculate the rate law constant and write the rate law. Trial [NO] (mol/L) [O2] (mol/L) Rate (mol/L/hr) 1 0.125 0.125 2.57 x 10-2 2 0.250 0.125 5.20 x 10-2 3 0.250 0.250 4.16 x 10-1
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...
19. For the reaction 2NO + O2 + 2NO2 the following reaction mechanism have been suggested; step1: NO + NO NZOZ Fast step 2: N2O2 + O2 k2, 2NO2 Slow and the apparent rate law was found to be R = kes [NO]? What would be the estimated effective activation energy, Eel, value, if the activation energies for forward and backward reactions in step 1 are 82 kJ mol- and 205 kJ mol', respectively, and the activation energy of step...
4. . The reaction 2NO(g) + O2(g) → 2NO2(g) has the following rate law: Rate = k[O2][NO]2 . If the concentration of NO is reduced by a factor of two, the rate will __________
(a) 2 NO2(g) à 2 NO(g) + O2(g) The rate law for this reaction is 2nd order. The rate constant is k = 0.775 M¯¹s¯¹. How much time would it require for [NO2] to go from 0.06M to 0.05M? (b) A 1st order reaction has a rate constant of k = 1.0 X 10¯³ s¯¹ at 25ᴼC. If the reaction rate doubles (2X faster) at 35ᴼC, what is the activation energy (Ea) for this reaction?
The reaction 2 NO2(g) → 2 NO (g) + O2(g) has rate constants of 2.70 x 10-2 M-1s-1 at 227 oC and 0.240 M-1s-1 at 277oC. What is the activation energy of this reaction? (Given: Arrhenius equation, k = Ae-Ea/RT ) A) 99.6 kJ/mol B) 22.8 kJ/mol C) 49.8 kJ/mol D) -22.8 kJ/mol E) 65.3 kJ/mol I'm unsure on how to do it since you're not given the frequency factor
2. (10 pts) Consider the following second-order reaction: 2NO2(g) + 2NO(g)+O2(g) The rate constant is 0.54 M-15-1, at 300 °C. How long would it take for the concentration of NO2 to decrease from 0.62M to 0.28M?
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...
2NO(g)+O2(g)→2NO2(g) For the above reaction, the following data were collected for the rate of disappearance of NO in the reaction: Experiment [NO] (M) [O2] (M) Initial Rate (M/s) 1 0.0126 0.0125 1.41×10−2 2 0.0252 0.0250 1.13×10−1 3 0.0252 0.0125 5.64×10−2 Part A: What are the units of the rate constant? a) s−1 b) M−1s−1 c) M−2s−1 d) M−3s−1 Part B: What is the rate of disappearance of NO when [NO]=0.0725 and [O2]=0.0100? Express the rate in molarity per second to...