The uncatalyzed decomposition of CH3CHO has an activation energy of 188 kJ mol-1. I2 catalyzes the...
The uncatalyzed decomposition of CH3CHO has an activation energy of 188 kJ mol-1. I2 catalyzes the reaction, and at 600 K the catalyzed reaction is ten million times faster than the uncatalyzed reaction. Therefore, assuming that the pre-exponential factor, A, is the same for both the uncatalyzed and catalyzed reactions, the activation energy of the catalyzed reaction is, in kJ mol-
-
80.4
-
B. 71.0
- C.
108
- D.
117
- E.
172
Homework Answers
Add Answer to:
The uncatalyzed decomposition of CH3CHO has an
activation energy of 188 kJ mol-1. I2
catalyzes the...
The activation energy of a certain uncatalyzed biochemical reaction is 46.7 kJ/mol. In the presence of...
The activation energy of a certain uncatalyzed biochemical reaction is 46.7 kJ/mol. In the presence of a catalyst at 39ºC, the rate constant for the reaction increases by a factor of 2030 as compared with the uncatalyzed reaction. Assuming the frequency factor A is the same for both the catalyzed and uncatalyzed reactions, calculate the activation energy for the catalyzed reaction. Activation energy = kJ/mol
A catalyst lowers the activation energy for a particular reaction from 75.0 kJ mol−1to 40.0 kJ...
A catalyst lowers the activation energy for a particular reaction from 75.0 kJ mol−1to 40.0 kJ mol−1. By what factor does the rate constant increase if the catalyst is used at 25.0 °C? Assume that all rate constants obey the Arrhenius equation and that the pre-exponential factors for the uncatalyzed and catalyzed reactions are equal
2. A reaction proceeds with ∆ H = -60 kJ/mol. The energy of activation of the...
2. A reaction proceeds with ∆ H = -60 kJ/mol. The energy of activation of the uncatalyzed reaction is 140 kJ/mol, whereas it is 85 kJ/mol for the catalyzed reaction. How many times faster is the catalyzed reaction than the uncatalyzed reaction at 25°C? Express your answer in scientific notation to two significant figures
The activation energy for a reaction is changed from 184 kJ/mol to 58.1 kJ/mol at 600....
The activation energy for a reaction is changed from 184 kJ/mol to 58.1 kJ/mol at 600. K by the introduction of a catalyst. If the uncatalyzed reaction takes about 2574 years to occur, about how long will the catalyzed reaction take? Assume the frequency factor A is constant and assume the initial concentrations are the same.
The activation energy of an uncatalyzed reaction is 91 kJ/mol . The addition of a catalyst...
The activation energy of an uncatalyzed reaction is 91 kJ/mol . The addition of a catalyst lowers the activation energy to 59 kJ/mol . A.) Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at 26 ∘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 120 ∘C...
1] The activation energy of an uncatalyzed reaction is 99 kJ/mol . The addition of a...
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?...
4. [Chang, 10.27) The activation energy for the decomposition of hydrogen peroxide: 2H2O2 (aq) → 2H200...
4. [Chang, 10.27) The activation energy for the decomposition of hydrogen peroxide: 2H2O2 (aq) → 2H200 + O2(g) is 42 kl.mol-1, whereas when the reaction is catalyzed by the enzyme catalase, it is 7.0 kJ. mol-1. Calculate the temperature that would cause the nonenzymatic catalysis to proceed as rapidly as the enzyme-catalyzed decomposition at 20°C. Assume the pre-exponential factor to be the same in both cases.
Suppose that a catalyst lowers the activation barrier of a reaction from 121 kJ mol−1 to...
Suppose that a catalyst lowers the activation barrier of a reaction from 121 kJ mol−1 to 55 kJ mol−1 By what factor would you expect the reaction rate to increase at 25 ∘C? (Assume that the frequency factors for the catalyzed and uncatalyzed reactions are identical.)
The activation energy for a reaction is 15 kJ mol-1 at 27° C. A catalyst lowers...
The activation energy for a reaction is 15 kJ mol-1 at 27° C. A catalyst lowers the activation energy to 10 kJ mol at the same temperature. By what factor is the reaction rate increased? Assume that the reactant concentrations and the pre-exponential factor in the Arrhenius equation are unchanged. O A. 1.5 OB. 1.1 OC. 0.67 O D.7.4 O E. 1.7 x 107 Reset Selection
The decomposition of dinitrogen tetroxide has an activation energy of 80. kJ/mol and Δ//orx,--30. kJ/mol. What...
The decomposition of dinitrogen tetroxide has an activation energy of 80. kJ/mol and Δ//orx,--30. kJ/mol. What is the activation energy for the reverse reaction? Draw reaction diagram to answer this question.
4. [Chang, 10.27) The activation energy for the decomposition of hydrogen peroxide: 2H2O2 (aq) → 2H200 + O2(g) is 42 kl.mol-1, whereas when the reaction is catalyzed by the enzyme catalase, it is 7.0 kJ. mol-1. Calculate the temperature that would cause the nonenzymatic catalysis to proceed as rapidly as the enzyme-catalyzed decomposition at 20°C. Assume the pre-exponential factor to be the same in both cases.
The activation energy for a reaction is 15 kJ mol-1 at 27° C. A catalyst lowers the activation energy to 10 kJ mol at the same temperature. By what factor is the reaction rate increased? Assume that the reactant concentrations and the pre-exponential factor in the Arrhenius equation are unchanged. O A. 1.5 OB. 1.1 OC. 0.67 O D.7.4 O E. 1.7 x 107 Reset Selection
The decomposition of dinitrogen tetroxide has an activation energy of 80. kJ/mol and Δ//orx,--30. kJ/mol. What is the activation energy for the reverse reaction? Draw reaction diagram to answer this question.
Most questions answered within 3 hours.
-
Describe how the file manager allocates a file to a single user.
List the steps that...
asked 13 minutes ago -
For the following reaction:
IBr(g) + 4F2(g) → IF5(g) +
BrF3(g)
Compound
ΔH°f (kJ mol-1)...
asked 15 minutes ago -
Assuming the simple probability of even A is given as P(A) and
the simple probability of...
asked 17 minutes ago -
2.- It is known that 20% of the students on campus are smokers.
If 8 students...
asked 18 minutes ago -
Provide a summary/reflection of what you gleaned of how law
enforcement is effect by Unconventional Weapons...
asked 39 minutes ago -
From the following heats of combustion,
CH3OH(l) + 3/2O2(g) → CO2(g) +
2H2O(l)
ΔHorxn = –726.4...
asked 32 minutes ago -
Floating Point Representation
Consider a computer that stores information using 10 bits words.
The first bit...
asked 1 hour ago -
. The theoretical weight percent of carbon in (CH3)3N is:
A. 20.32% B. 81.95% C. 9.97%...
asked 54 minutes ago -
The rate of a certain reaction is given by the following rate
law:
rate = k[H2][I2]...
asked 49 minutes ago -
A 10,000 uF capacitor is in series with a 1 uH inductor. What is
Zeq of...
asked 53 minutes ago -
Draw the molecular orbital diagram for O2-
(oxygen molecule with a negative charge).
asked 1 hour ago -
Of all the different weapons discussed in this chapter that make
up CBRNE,
Which group do...
asked 1 hour ago