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Arrhenius Equation

Q. 9) If the activation energy for a given compound is found to be 42 kJ/mol, with a frequency factor of 8.0 × 1010 s-1, what is the rate constant for this reaction at 298 K? A) 4.6 × 10 5 s-1 B) 7.4 × 10-4 s-1 C) 2.9 × 10-4 s-1 D) 3.5 × 103 s-1 E) 1.4 × 109 s-1

Solved • Jun 26, 2019

Arrhenius Equation

Q. 7) A reaction is found to have an activation energy of 38.0 kJ/mol. If the rate constant for this reaction is 1.60 × 102 M-1s-1 at 249 K, what is the rate constant at 436 K? A) 7.94 × 104 M-1s-1 B) 3.80 × 104 M-1s-1 C) 4.20 × 105 M-1s-1 D) 1.26 × 103 M-1s-1 E) 2.38 × 105 M-1s-1

Solved • Jun 26, 2019

Arrhenius Equation

Q. 6) A reaction is followed and found to have a rate constant of 3.36 × 104 M-1s-1 at 344 K and a rate constant of 7.69 M-1s-1 at 219 K. Determine the activation energy for this reaction. A) 23.8 kJ/mol B) 58.2 kJ/mol C) 11.5 kJ/mol D) 12.5 kJ/mol E) 42.0 kJ/mol

Solved • Jun 26, 2019

Arrhenius Equation

Q. 5) A reaction is found to have an activation energy of 108 kJ/mol. If the rate constant for this reaction is 4.60 × 10-6 s-1 at 275 K, what is the rate constant at 366 K? A) 11.7 s-1 B) 1.85 × 10-4 s-1 C) 1.72 s-1 D) 0.580 s-1 E) 5.40 × 10-5 s-1

Solved • Jun 26, 2019

Arrhenius Equation

Q. 1) The first-order rearrangement of CH3NC is measured to have a rate constant of 3.61 x 10-15 s-1 at 298 K and a rate constant of 8.66 × 10-7 s-1 at 425 K. Determine the activation energy for this reaction. A) 127 kJ/mol B) 417 kJ/mol C) 160. kJ/mol D) 338 kJ/mol E) 240. kJ/mol

Solved • Jun 26, 2019

Arrhenius Equation

Q. 13) The first-order isomerization reaction: cyclopropane →propene, has a rate constant of 1.10 × 10-4 s-1 at 470°C and an activation energy of 264 kJ/mol. What is the temperature of the reaction when the rate constant is equal to 4.36 × 10-3 s-1? A) 411°C B) 126°C C) 510°C D) 540°C

Solved • Jun 25, 2019

Arrhenius Equation

Q. 12) The first-order isomerization reaction: cyclopropane →propene, has a rate constant of 1.10 × 10-4 s-1 at 470°C and 5.70 × 10-4 s-1 at 500°C. What is the activation energy, Ea, for the reaction? A) 380 kJ/mol B) 46 kJ/mol C) 260 kJ/mol D) 110 kJ/mol

Solved • Jun 25, 2019