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For a first order reaction A → P, the temperature (T) dependent rate constant (k) was found to follow the equation   The pre-exponential factor A and the activation energy Ea, respectively, are:
  • a)
    1.0 × 106 s–1 and 9.2 kJ mol–1
  • b)
    6.0 s–1 and 16.6 kJ mol–1
  • c)
    1.0 × 106 s–1 and 16.6 kJ mol–1
  • d)
    1.0 × 106 s–1 and 38.3 kJ mol–1
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
For a first order reaction A → P, the temperature (T) dependent r...
Given, log K = 6 - 2000/T

On comparing it with our standard equation , we have,

Since, log K = log A - Ea/2.303RT So, A = 10^6 sec^-1 and Ea = 38.3 kJ/mole
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Most Upvoted Answer
For a first order reaction A → P, the temperature (T) dependent r...
The logarithmic form of Arrhenius equation is
logk = log A−Ea 2.303 RT
Given, log k = 6 − 2000 T
Comparing the above two equations :
logA=6⇒A=106
and Ea 2.303 R=2000
⇒Ea=2000×2.303×8.314J
=38.3 kJmol−1
Thus the activation energy is 38.3 kJmol−1
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Community Answer
For a first order reaction A → P, the temperature (T) dependent r...
The logarithmic form of Arrhenius equation is
logk = log A−Ea 2.303 RT
Given, log k = 6 − 2000 T
Comparing the above two equations :
logA=6⇒A=106
and Ea 2.303 R=2000
⇒Ea=2000×2.303×8.314J
=38.3 kJmol−1
Thus the activation energy is 38.3 kJmol−1
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For a first order reaction A → P, the temperature (T) dependent rate constant (k) was found to followthe equation The pre-exponential factor A and the activation energy Ea,respectively, are:a)1.0 × 106 s–1 and 9.2 kJ mol–1b)6.0 s–1 and 16.6 kJ mol–1c)1.0 × 106 s–1 and 16.6 kJ mol–1d)1.0 × 106 s–1 and 38.3 kJ mol–1Correct answer is option 'D'. Can you explain this answer?
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For a first order reaction A → P, the temperature (T) dependent rate constant (k) was found to followthe equation The pre-exponential factor A and the activation energy Ea,respectively, are:a)1.0 × 106 s–1 and 9.2 kJ mol–1b)6.0 s–1 and 16.6 kJ mol–1c)1.0 × 106 s–1 and 16.6 kJ mol–1d)1.0 × 106 s–1 and 38.3 kJ mol–1Correct answer is option 'D'. 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 For a first order reaction A → P, the temperature (T) dependent rate constant (k) was found to followthe equation The pre-exponential factor A and the activation energy Ea,respectively, are:a)1.0 × 106 s–1 and 9.2 kJ mol–1b)6.0 s–1 and 16.6 kJ mol–1c)1.0 × 106 s–1 and 16.6 kJ mol–1d)1.0 × 106 s–1 and 38.3 kJ mol–1Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a first order reaction A → P, the temperature (T) dependent rate constant (k) was found to followthe equation The pre-exponential factor A and the activation energy Ea,respectively, are:a)1.0 × 106 s–1 and 9.2 kJ mol–1b)6.0 s–1 and 16.6 kJ mol–1c)1.0 × 106 s–1 and 16.6 kJ mol–1d)1.0 × 106 s–1 and 38.3 kJ mol–1Correct answer is option 'D'. Can you explain this answer?.
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