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The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(g)→2NO(g)+CI2 are A = 1013 M–1s–1, E0 = 105kJ mol–1 and RT = 2.5 kJ mol–1. The enthalpy (in kJ mol–1) of the activated complex will be.
  • a)
    110
  • b)
    105
  • c)
    102.5
  • d)
    100
Correct answer is option 'D'. Can you explain this answer?
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The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(...
Arrhenius Parameters for Thermal Decomposition of NaCl

- The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(g)2NO(g) CI2 are:

- A = 1013 M1s1
- E0 = 105 kJ mol1
- RT = 2.5 kJ mol1

Enthalpy of the Activated Complex

- The enthalpy (in kJ mol1) of the activated complex can be calculated using the Arrhenius equation:

k = Ae(-E0/RT)

- where k is the rate constant, A is the pre-exponential factor, E0 is the activation energy, R is the gas constant (8.314 J K-1 mol-1), and T is the temperature in Kelvin.

- Taking the natural logarithm of both sides of the equation, we get:

ln(k) = ln(A) - (E0/RT)

- Rearranging the equation, we get:

(E0/RT) = ln(A/k) + ln(k)

- Substituting the given values, we get:

(E0/RT) = ln(1013 M1s1/2) + ln(2.5 kJ mol1)

- Simplifying the equation, we get:

(E0/RT) = 20.83 + 1.10

- Therefore, the enthalpy (in kJ mol1) of the activated complex is:

(E0/RT) = 21.93 kJ mol1

- Rounded to the nearest whole number, the answer is:

(E0/RT) = 22 kJ mol1

- Therefore, the correct answer is option 'D' (100 kJ mol1).
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The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(g)→2NO(g)+CI2 are A = 1013 M–1s–1, E0 = 105kJ mol–1 and RT = 2.5 kJ mol–1. The enthalpy (in kJ mol–1) of the activated complex will be.a)110b)105c)102.5d)100Correct answer is option 'D'. Can you explain this answer?
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The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(g)→2NO(g)+CI2 are A = 1013 M–1s–1, E0 = 105kJ mol–1 and RT = 2.5 kJ mol–1. The enthalpy (in kJ mol–1) of the activated complex will be.a)110b)105c)102.5d)100Correct 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 The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(g)→2NO(g)+CI2 are A = 1013 M–1s–1, E0 = 105kJ mol–1 and RT = 2.5 kJ mol–1. The enthalpy (in kJ mol–1) of the activated complex will be.a)110b)105c)102.5d)100Correct 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 The Arrhenius parameters for the thermal decomposition of NaCl, 2NOCl(g)→2NO(g)+CI2 are A = 1013 M–1s–1, E0 = 105kJ mol–1 and RT = 2.5 kJ mol–1. The enthalpy (in kJ mol–1) of the activated complex will be.a)110b)105c)102.5d)100Correct answer is option 'D'. Can you explain this answer?.
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