1 Kcal is equal to:
Correct answer: A. 4.1868 kJ
- A. 4.1868 kJ
- B. 1.055 kJ
- C. 3.6 kJ
- D. None of the above
Explanation
The correct answer is 4.1868 kJ. This is because 1 kilocalorie (Kcal) is equivalent to 4.1868 kilojoules (kJ). The other options are incorrect: 1.055 kJ is the conversion factor for BTU to kJ, 3.6 kJ is related to electrical energy conversions, and 'None of the above' is incorrect because the first option is accurate.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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