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110 solutions

Arrhenius Equation

Q. The aquation of tris(1,10-phenanthroline)iron(II) in acid solution takes place according to the following chemical equation:Fe(phen)32+ + 3 H3O+ + 3 H2O → Fe(H2O)62+ + 3 phenH+.If the activation energy, Ea, is 126 kJ/mol and the rate constant at 30°C is 9.8 × 10-3 min-1, what is the rate constant at 35°C?

Solved • Nov 2, 2019

Arrhenius Equation

Q. 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 = 85.6 kJ/mol?

Solved • Nov 2, 2019

Arrhenius Equation

Q. The Haber process is typically carried out at a temperature of approximately 500 degrees C. What would happen to the rate of the forward reaction if the temperature were lowered to 100 degrees C?

Solved • Oct 28, 2019

Arrhenius Equation

Q. 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 95.0°C if Ea = 55.5 kJ/mol?

Solved • Oct 27, 2019

Arrhenius Equation

Q. The activation energy for the decomposition of HI(g) to H2(g) and I2(g) is 186 kJ/mol. The rate constant at 555K is 3.52×10-7 L/mol.s. What is the rate constant at 645K?

Solved • Oct 24, 2019

Arrhenius Equation

Q. If a certain reaction has an activation energy Ea of 25 kJ . mol^-1, what was the initial temperature if raising the temperature 10 150 degrees C caused the rate double? 1. 112 degrees C 2. 195 degrees C 3. 3915 degrees C 4. 4455 degrees C

Solved • Oct 23, 2019

Arrhenius Equation

Q. For the reaction HO(g) + H2(g) → H2O(g) + H(g) a plot of ln k vs 1/T gives a straight line with a slope equal to -5.1x10^3 K. What is the activation energy for the reaction? 1. 12 kJ/mol 2. 98 kJ/mol 3. 5.1 kJ/mol 4. 0.61 kJ/mol 5. 42 kJ/mol

Solved • Oct 23, 2019