JEE Exam > JEE Questions > Given that the normal energy of the reactant ...
Start Learning for Free
Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?
- a)80 J, 60 J
- b)60 J, 80 J
- c)80 J, 100 J
- d)50 J, 70 J
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Given that the normal energy of the reactant and product are 40J and 2...
Most Upvoted Answer
Given that the normal energy of the reactant and product are 40J and 2...
Free Test
FREE
| Start Free Test |
Community Answer
Given that the normal energy of the reactant and product are 40J and 2...
**Given Data:**
- Normal energy of the reactant = 40 J
- Normal energy of the product = 20 J
- Threshold energy of the uncatalysed reaction = 120 J
- Rate of uncatalysed reaction at 400 K = Rate of catalysed reaction at 300 K
**Calculations:**
1. **Threshold energy of catalysed reaction:**
- Let the activation energy of the forward reaction be E1 and the activation energy of the backward reaction be E2.
- For the uncatalysed reaction:
Threshold energy = Activation energy of forward reaction + Activation energy of backward reaction
120 J = 40 J + 20 J = 60 J
- For the catalysed reaction:
Threshold energy = Activation energy of forward reaction + Activation energy of backward reaction
120 J = E1 + E2
2. **Rate of Reaction:**
- According to Arrhenius equation, the rate of reaction is given by:
Rate = A * exp(-Ea/RT)
Where A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature.
- Given that the rate of uncatalysed reaction at 400 K = Rate of catalysed reaction at 300 K
- A * exp(-60/400) = A * exp(-E1/300)
- exp(-0.15) = exp(-E1/300)
- -0.15 = -E1/300
- E1 = 300 * 0.15 = 45 J
3. **Activation energies of the catalysed forward and backward reactions:**
- From the threshold energy equation for the catalysed reaction:
120 J = E1 + E2
120 J = 45 J + E2
E2 = 120 J - 45 J
E2 = 75 J
**Therefore, the activation energy of the catalysed forward and backward reactions respectively are 45 J and 75 J.**
- Normal energy of the reactant = 40 J
- Normal energy of the product = 20 J
- Threshold energy of the uncatalysed reaction = 120 J
- Rate of uncatalysed reaction at 400 K = Rate of catalysed reaction at 300 K
**Calculations:**
1. **Threshold energy of catalysed reaction:**
- Let the activation energy of the forward reaction be E1 and the activation energy of the backward reaction be E2.
- For the uncatalysed reaction:
Threshold energy = Activation energy of forward reaction + Activation energy of backward reaction
120 J = 40 J + 20 J = 60 J
- For the catalysed reaction:
Threshold energy = Activation energy of forward reaction + Activation energy of backward reaction
120 J = E1 + E2
2. **Rate of Reaction:**
- According to Arrhenius equation, the rate of reaction is given by:
Rate = A * exp(-Ea/RT)
Where A is the pre-exponential factor, Ea is the activation energy, R is the gas constant, and T is the temperature.
- Given that the rate of uncatalysed reaction at 400 K = Rate of catalysed reaction at 300 K
- A * exp(-60/400) = A * exp(-E1/300)
- exp(-0.15) = exp(-E1/300)
- -0.15 = -E1/300
- E1 = 300 * 0.15 = 45 J
3. **Activation energies of the catalysed forward and backward reactions:**
- From the threshold energy equation for the catalysed reaction:
120 J = E1 + E2
120 J = 45 J + E2
E2 = 120 J - 45 J
E2 = 75 J
**Therefore, the activation energy of the catalysed forward and backward reactions respectively are 45 J and 75 J.**
Attention JEE Students!
To make sure you are not studying endlessly, EduRev has designed JEE study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in JEE.
|
Explore Courses for JEE exam
|
|
Top Courses for JEEView all
Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer?
Question Description
Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer?.
Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Given that the normal energy of the reactant and product are 40J and 20J respectively and threshold energy of the uncatalysed reaction is 120 J. If the rate of uncatalysed reaction at 400 K becomes equal to the rate of catalysed reaction at 300 K, then what will be the activation energy of the catalysed forward and backward reactions respectively?a) 80 J, 60 Jb) 60 J, 80 Jc) 80 J, 100 J d) 50 J, 70 JCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup