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114 solutions

Arrhenius Equation

Q. The Arrhenius equation describes the relationship between the rate constant, k, and the energy of activation, Ea k = A^e^-Ea/RT In this equation, A is an empirical constant, R is the ideal-gas constant, e is the base of natural logarithms, and T is the absolute temperature. According to the Arrhenius equation, (A) At constant temperature, reactions with lower activation energies proceed more rapidly. (B) At constant temperature, reactions with lower activation energies proceed less rapidly. (C) At constant energy of activation, reactions at lower temperatures proceed more rapidly. (D) At constant energy of activation, reactions with smaller values of A proceed more rapidly.

Solved • Dec 13, 2019

Arrhenius Equation

Q. The rate constant for a reaction at 25C is 0.010s-1 and its activation energy is 35.8 kJ. Find the rate constant at 50C

Solved • Dec 7, 2019

Arrhenius Equation

Q. The activation energy for a particular reaction is 83.1 kJ•mol-1. By what factor will the rate constant increase when the temperature is increased from 50.0 °C to 60.0 °C?

Solved • Dec 4, 2019

Arrhenius Equation

Q. Consider the following information about four different acid solutions:

Solved • Nov 25, 2019

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