Answer :
According to the given statement The rate constant for the reaction is 3.7×10⁻¹⁰m.
What is a physical reaction?
A physical reaction is an action that alters the material or object's physical properties. Examples of physical properties are mass, size, and density. A physical reaction is defined as a response in which ions rearrange one another without experiencing a chemical change.
Briefing:
Vitamin E is used in this activity.
A study of the interaction between the oxidant in ethanol and photochemically stimulated duroquinone is available.
Duroquinone was photochemically excited, and a bimolecular reaction followed at a diffusion-limited rate.
(a) In this case, we must calculate the rate constant for an ethanol diffusion-limited process.
We have datas for:
R = 8.314K⁻¹η
T = 298Kmol⁻¹
η = 1.06 x 10-3 kg m-1 s⁻¹
K = 8RT/3η
K = 8 × 8.314 × 298/ 3η
K = 6.23×10⁹dm³mol⁻¹s⁻¹
Here we have to estimate critical reaction distance if the sum of diffusion coefficients is 1×10⁻⁹m²s⁻¹
Firstly we will write equation for kk and from it express and calculate R*
K = 4πR*DNₐ
R* = 2.77×10⁹×10⁻³/4π 1×10⁻⁹×6.23×10²³
R* = 3.7×10⁻¹⁰m.
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