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The heats of combustion of carbon and carbon monoxide are -390 KJ and -278 KJ respectively. The heat of formation of carbon monoxide is
  • a)
    -112 KJ
  • b)
    -668 KJ
  • c)
    112 KJ
  • d)
    668 KJ
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The heats of combustion of carbon and carbon monoxide are -390 KJ and ...
Heat of Formation of Carbon Monoxide Calculation
Heat of formation can be calculated using the equation:
ΔHf° = Σ ΔHf°(products) - Σ ΔHf°(reactants)

Given data:
Heat of combustion of carbon (ΔHc) = -390 KJ
Heat of combustion of carbon monoxide (ΔHc) = -278 KJ

Calculations:
ΔHf°(CO) = Σ ΔHf°(products) - Σ ΔHf°(reactants)
ΔHf°(CO) = ΔHc(C) + 0.5 * ΔHc(O2) - ΔHc(CO)
ΔHf°(CO) = -390 KJ + 0.5 * 0 - (-278 KJ)
ΔHf°(CO) = -390 KJ + 278 KJ
ΔHf°(CO) = -112 KJ
Therefore, the heat of formation of carbon monoxide is -112 KJ.
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The heats of combustion of carbon and carbon monoxide are -390 KJ and -278 KJ respectively. The heat of formation of carbon monoxide isa)-112 KJb)-668 KJc)112 KJd)668 KJCorrect answer is option 'A'. Can you explain this answer?
Question Description
The heats of combustion of carbon and carbon monoxide are -390 KJ and -278 KJ respectively. The heat of formation of carbon monoxide isa)-112 KJb)-668 KJc)112 KJd)668 KJCorrect answer is option 'A'. 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 The heats of combustion of carbon and carbon monoxide are -390 KJ and -278 KJ respectively. The heat of formation of carbon monoxide isa)-112 KJb)-668 KJc)112 KJd)668 KJCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The heats of combustion of carbon and carbon monoxide are -390 KJ and -278 KJ respectively. The heat of formation of carbon monoxide isa)-112 KJb)-668 KJc)112 KJd)668 KJCorrect answer is option 'A'. Can you explain this answer?.
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