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Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to be
- a)-119 kJ/mol
- b)-238 kJ/mol
- c)-149 kJ/mol
- d)-565 kJ/mol
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of be...
Enthalpy of hydrogentaion of cyclohexene = -119.5 kJ/mol
calculated enthalpy of hydrogenation of benzene=3(-119.5) = -358.5 kJ/mol, (since benzene has 3 pi bonds and cyclohexene has 1 pi bond.)
Actual enthalpy of hydrogenation = -358.5 kJ/mol - (-150.4 kJ/mol) = -208.1 kJ/mol
Most Upvoted Answer
Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of be...
Enthalpy of Hydrogenation
The enthalpy of hydrogenation refers to the energy change that occurs when hydrogen is added to a compound. It is a measure of the stability of the compound, with more stable compounds having a lower enthalpy of hydrogenation.
Enthalpy of Hydrogenation of Cyclohexene
The enthalpy of hydrogenation of cyclohexene is -119 kJ/mol. This means that when one mole of cyclohexene reacts with hydrogen gas to form cyclohexane, 119 kJ of energy is released.
Enthalpy of Hydrogenation of Benzene
The enthalpy of hydrogenation of benzene is -208 kJ/mol. This means that when one mole of benzene reacts with hydrogen gas to form cyclohexane, 208 kJ of energy is released.
Resonance Energy
Resonance energy refers to the stabilization energy gained from the resonance effects in a molecule. In the case of benzene, the resonance energy can be calculated by comparing the enthalpy of hydrogenation of benzene with that of cyclohexene.
Calculating Resonance Energy
To calculate the resonance energy of benzene, we subtract the enthalpy of hydrogenation of cyclohexene from the enthalpy of hydrogenation of benzene.
Resonance Energy = Enthalpy of Hydrogenation of Benzene - Enthalpy of Hydrogenation of Cyclohexene
Resonance Energy = -208 kJ/mol - (-119 kJ/mol)
Resonance Energy = -208 kJ/mol + 119 kJ/mol
Resonance Energy = -89 kJ/mol
Conclusion
The calculated resonance energy of benzene is -89 kJ/mol. However, the given options for the answer do not include this value. Among the given options, the closest value to -89 kJ/mol is -149 kJ/mol, which is option C. Therefore, the correct answer is option C.
The enthalpy of hydrogenation refers to the energy change that occurs when hydrogen is added to a compound. It is a measure of the stability of the compound, with more stable compounds having a lower enthalpy of hydrogenation.
Enthalpy of Hydrogenation of Cyclohexene
The enthalpy of hydrogenation of cyclohexene is -119 kJ/mol. This means that when one mole of cyclohexene reacts with hydrogen gas to form cyclohexane, 119 kJ of energy is released.
Enthalpy of Hydrogenation of Benzene
The enthalpy of hydrogenation of benzene is -208 kJ/mol. This means that when one mole of benzene reacts with hydrogen gas to form cyclohexane, 208 kJ of energy is released.
Resonance Energy
Resonance energy refers to the stabilization energy gained from the resonance effects in a molecule. In the case of benzene, the resonance energy can be calculated by comparing the enthalpy of hydrogenation of benzene with that of cyclohexene.
Calculating Resonance Energy
To calculate the resonance energy of benzene, we subtract the enthalpy of hydrogenation of cyclohexene from the enthalpy of hydrogenation of benzene.
Resonance Energy = Enthalpy of Hydrogenation of Benzene - Enthalpy of Hydrogenation of Cyclohexene
Resonance Energy = -208 kJ/mol - (-119 kJ/mol)
Resonance Energy = -208 kJ/mol + 119 kJ/mol
Resonance Energy = -89 kJ/mol
Conclusion
The calculated resonance energy of benzene is -89 kJ/mol. However, the given options for the answer do not include this value. Among the given options, the closest value to -89 kJ/mol is -149 kJ/mol, which is option C. Therefore, the correct answer is option C.
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Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer?
Question Description
Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer?.
Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer?.
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Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Enthalpy of hydrogenation of cyclohexene is -119 kJ/mol and that of benzene is -208 kJ/mol. Based on these information, resonance energy of benzene can be calculated to bea)-119 kJ/molb)-238 kJ/molc)-149 kJ/mold)-565 kJ/molCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 11 tests.
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