Part A)
A certain first-order reaction has a rate constant of 2.40×10−2 s−1 at 25 ∘C. What is the value of k at 60 ∘C if Ea = 74.0 kJ/mol ?
Express your answer using two significant figures.
Part B)
Another first-order reaction also has a rate constant of 2.40×10−2 s−1 at 25 ∘C. What is the value of k at 60 ∘C if Ea = 135 kJ/mol ?
Express your answer using two significant figures.
Part A) A certain first-order reaction has a rate constant of 2.40×10−2 s−1 at 25 ∘C....
Part A A certain first-order reaction has a rate constant of 2.30x10-25-1 at 15 °C. What is the value of k at 51 °C if EQ = 71.0 kJ/mol ? Express your answer using two significant figures. IVO AQ R o B ? Submit Request Answer Part B Another first-order reaction also has a rate constant of 2.30x10-25-1 at 15 °C. What is the value of k at 51 Cif En = 135 kJ/mol ?
A certain first-order reaction has a rate constant k = 3.21 X 10-2 s-1 at 20oC. What is the value of the rate constant at 100oC if Ea = 81.5 kJ/mol? (R = 8.314 J/mol K) Write your answer using 3 significant figures.
A reaction has a rate constant of 1.21×10−4 s−1 at 25 ∘C and 0.226 s−1 at 77 ∘C . Part A Determine the activation barrier for the reaction. Express your answer in units of kilojoules per mole and with 3 significant figures. Ea E a = nothing kJ/mol Request Answer Part B What is the value of the rate constant at 18 ∘C ? Express your answer in units of inverse seconds (s−1) and with 3 significant figures. k k...
Problem 14.61 18 of 28 > - Part A A certain first-order reaction has a rate constant of 2.10x10-2 s-1 at 16 °C. What is the value of k at 70 °Cif EQ = 84.0 kJ/mol ? Express your answer using two significant figures. IVO AQ O O ? Submit Request Answer Part B Another first-order reaction also has a rate constant of 2.10x10-25-1 at 16 °C. What is the value of k at 70 °C if EQ = 126...
A certain first-order reaction has a rate constant of 2.65×10−2 s−1 at 20 ∘C. What is the value of k at 50 ∘C if Ea = 70.0 kJ/mol ?
a certain first-order reaction has a rate constant of 3.00×10−2 s−1 at 23 ∘c. what is the value of k at 67 degrees celsius if Ea= 86 kJ/mol
A first-order reaction has a rate constant at 20 C of 2.75 10–2 sec-1 and Ea is 75.5 kJ/mol. What is the rate constant (in sec-1) at 60C? 8. A first-order reaction has a rate constant at 20°C of 2.75 x 10 sec ? and Es is 75.5 kJ/mol. What is the rate constant (in sec ) at 60°C?
1] The activation energy of an uncatalyzed reaction is 99 kJ/mol . The addition of a catalyst lowers the activation energy to 56 kJ/mol . a] Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at 27 ∘C? Express the ratio to two significant digits. b] Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at 139 ∘C?...
The following reaction is first order in N2O5: N2O5(g)→NO3(g)+NO2(g) The rate constant for the reaction at a certain temperature is 0.053/s. You may want to reference (Pages 593 - 598) Section 14.4 while completing this problem. Part A Calculate the rate of the reaction when [N2O5]= 5.7×10−2 M. Express your answer using two significant figures. rate = nothing M/s Request Answer Part B What would the rate of the reaction be at the same concentration as in Part A if...
A particular first-order reaction has a rate constant of 1.35 × 102 s−1 at 25.0 ∘C. What is the magnitude of k at 75.0∘C if Ea = 55.5 kJ/mol. PLEASE SHOW WORK