Class 12 Exam  >  Class 12 Questions  >  The enthalpies of combustion of C(graphite) a... Start Learning for Free
The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol is
  • a)
    —1.9
  • b)
    —788.9
  • c)
    1.9
  • d)
    788.9
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The enthalpies of combustion of C(graphite) and C(diamond) are —...
Understanding Enthalpy of Combustion
The enthalpy of combustion is the heat released when one mole of a substance combusts completely in oxygen. For carbon, we have two forms: graphite and diamond.
Given Data
- Enthalpy of combustion of C(graphite): -393.5 kJ/mol
- Enthalpy of combustion of C(diamond): -395.4 kJ/mol
Calculating the Enthalpy of Conversion
To find the enthalpy change for converting graphite to diamond, we can use the following relationship:
Enthalpy of conversion (C(graphite) to C(diamond)) = Enthalpy of combustion of C(diamond) - Enthalpy of combustion of C(graphite)
Substituting the Values
- Enthalpy of conversion = (-395.4 kJ/mol) - (-393.5 kJ/mol)
- Enthalpy of conversion = -395.4 + 393.5
- Enthalpy of conversion = -1.9 kJ/mol
Conclusion
Thus, the enthalpy of conversion of C(graphite) to C(diamond) is -1.9 kJ/mol. This negative value indicates that the conversion from graphite to diamond is an endothermic process, meaning it requires energy input.
Final Answer
The correct answer is option c) 1.9 kJ/mol (noting the negative sign in the context of conversion).
Free Test
Community Answer
The enthalpies of combustion of C(graphite) and C(diamond) are —...
C(graphite)-c(diamond) -393.5-(-395.4) 1.9
Explore Courses for Class 12 exam
The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer?
Question Description
The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer?.
Solutions for The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer?, a detailed solution for The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The enthalpies of combustion of C(graphite) and C(diamond) are —393.5 and —395.4 kJ/mol respectively. The enthalpy of conversion of C(graphite) to C(diamond) in kJ/mol isa)—1.9b)—788.9c)1.9d)788.9Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev