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The value AH of the reaction.
CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)
The average bond energies of C-H and C-Cl bonds are 416 and 328 kJ mol respectively
CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)
The average bond energies of C-H and C-Cl bonds are 416 and 328 kJ mol respectively
- a)2188 kJ
- b)4968 kJ
- c)1488 kJ
- d)1890 kJ
Correct answer is option 'C'. Can you explain this answer?
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The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The a...
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The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The a...
Understanding the Reaction
The given reaction is:
CH2Cl2(g) → C(g) + 2H(g) + 2Cl(g)
To find the enthalpy change (ΔH) of the reaction, we need to consider the bond energies involved.
Bond Energies
- Average bond energy of C-H: 416 kJ/mol
- Average bond energy of C-Cl: 328 kJ/mol
Breaking Bonds
In CH2Cl2, the bonds that need to be broken are:
- 2 C-H bonds
- 2 C-Cl bonds
The total energy required to break these bonds is calculated as follows:
- Energy to break 2 C-H bonds: 2 × 416 kJ/mol = 832 kJ
- Energy to break 2 C-Cl bonds: 2 × 328 kJ/mol = 656 kJ
Total Energy Required
- Total energy required to break all bonds in CH2Cl2:
832 kJ + 656 kJ = 1488 kJ
Forming Atoms
When forming the products (C, H, and Cl), no bonds are formed as they are in their atomic states. Therefore, no energy is released during this step.
Calculating ΔH
The overall reaction enthalpy change (ΔH) is:
ΔH = Energy required to break bonds - Energy released by forming products
Since no energy is released in forming atoms:
ΔH = 1488 kJ - 0 kJ = 1488 kJ
Conclusion
Thus, the enthalpy change (ΔH) for the reaction is 1488 kJ, confirming that the correct answer is option 'C'.
The given reaction is:
CH2Cl2(g) → C(g) + 2H(g) + 2Cl(g)
To find the enthalpy change (ΔH) of the reaction, we need to consider the bond energies involved.
Bond Energies
- Average bond energy of C-H: 416 kJ/mol
- Average bond energy of C-Cl: 328 kJ/mol
Breaking Bonds
In CH2Cl2, the bonds that need to be broken are:
- 2 C-H bonds
- 2 C-Cl bonds
The total energy required to break these bonds is calculated as follows:
- Energy to break 2 C-H bonds: 2 × 416 kJ/mol = 832 kJ
- Energy to break 2 C-Cl bonds: 2 × 328 kJ/mol = 656 kJ
Total Energy Required
- Total energy required to break all bonds in CH2Cl2:
832 kJ + 656 kJ = 1488 kJ
Forming Atoms
When forming the products (C, H, and Cl), no bonds are formed as they are in their atomic states. Therefore, no energy is released during this step.
Calculating ΔH
The overall reaction enthalpy change (ΔH) is:
ΔH = Energy required to break bonds - Energy released by forming products
Since no energy is released in forming atoms:
ΔH = 1488 kJ - 0 kJ = 1488 kJ
Conclusion
Thus, the enthalpy change (ΔH) for the reaction is 1488 kJ, confirming that the correct answer is option 'C'.
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The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer? for IIT JAM 2025 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for IIT JAM 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer?.
The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer? for IIT JAM 2025 is part of IIT JAM preparation. The Question and answers have been prepared according to the IIT JAM exam syllabus. Information about The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for IIT JAM 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer?.
Solutions for The value AH of the reaction.CH2Cl2(g) → C(g)+2H(g) + 2Cl(g)The average bond energies of C-H and C-Cl bonds are 416 and 328kJ mol respectivelya)2188 kJb)4968 kJc)1488 kJd)1890 kJCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for IIT JAM.
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