4. In the dimerization of methyl radicals at 298 K, the experimental preexponential factor is 2.4 x 101º M-1 s¯1. Knowing that the CH3• has relative molecular mass of 15.035 amu, and that C-H bond length is 1.54 Å, calculate: a) The reduced mass. b) Reactive cross-section. c) Steric factor.

4. In the dimerization of methyl radicals at 298 K, the experimental preexponential factor is 2.4 x 101º M-1 s¯1. Knowing that the CH3• has relative molecular mass of 15.035 amu, and that C-H bond length is 1.54 Å, calculate: a) The reduced mass. b) Reactive cross-section. c) Steric factor.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

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Chapter13: Kinetic Methods

Section: Chapter Questions

Problem 4P

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Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.

Question

4. In the dimerization of methyl radicals at 298 K, the experimental preexponential factor is 2.4 × 1010 M-' s-'.
Knowing that the CH3• has relative molecular mass of 15.035 amu, and that C-H bond length is 1.54 Å,
calculate:
a) The reduced mass.
b) Reactive cross-section.
c) Steric factor.

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