Chemistry Exam  >  Chemistry Questions  >  Physiosorbed particles undergo desorption at ... Start Learning for Free
Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface is
  • a)
    7.8 × 10–10
  • b)
    8 × 10–11
  • c)
    2 × 10–9
  • d)
    1 × 10–12
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Physiosorbed particles undergo desorption at 270C with an activation e...
Abbreviation: T1(tau average residence time) , T(temperature)
T1=1/K(d)
K(d) desorption constant (follow 1st order)
K(d)=A*exp(-E(a)/(R*T)
A frequency factor
E(a) Activation energy for Desorption Process
R = Universal Gas Constant
T = Temprature
TIP: t(1/2) = ln2/K(d) 
t(1/2) half residence time
Free Test
Community Answer
Physiosorbed particles undergo desorption at 270C with an activation e...
The average residence time of particles on the surface can be calculated using the following equation:

τ = (1/k) * exp(Ea/RT)

Where τ is the average residence time, k is the rate constant (which can be calculated using the frequency factor and the desorption activation energy), Ea is the desorption activation energy (given as 16.628 kJ/mol), R is the gas constant (8.314 J/mol-K), and T is the temperature in Kelvin (given as 270C or 543K).

First, we need to calculate the rate constant:

k = A * exp(-Ea/RT)
= 10^12 * exp(-16628/(8.314 * 543))
= 2.47 * 10^13 s^-1

Now we can calculate the average residence time:

τ = (1/k) * exp(Ea/RT)
= (1/2.47 * 10^13) * exp(16628/(8.314 * 543))
= 7.8 seconds (rounded to one decimal place)

Therefore, the average residence time of particles on the surface is approximately 7.8 seconds.
Explore Courses for Chemistry exam
Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer?
Question Description
Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer?.
Solutions for Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry. Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer?, a detailed solution for Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Physiosorbed particles undergo desorption at 270C with an activation energy of 16.628 kJ/mol. Assuming first order process and a frequency factor of 1012 Hz, the average residence time (in sec) of particles on the surface isa)7.8 × 10–10b)8 × 10–11c)2 × 10–9d)1 × 10–12Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Chemistry tests.
Explore Courses for Chemistry exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev