∆Hf of a compound is equal in magnitude to the:
Correct answer: D. Heat of reaction
- A. Heat of combustion
- B. Heat of decomposition
- C. Heat of solution
- D. Heat of reaction
Explanation
The correct option is D) Heat of reaction. The ∆Hf (enthalpy of formation) of a compound is equal in magnitude to the heat of reaction. Enthalpy of formation refers to the heat change when one mole of a compound is formed from its constituent elements in their standard states.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Thermochemistry and Energetics of Chemical Reactions
728 free Thermochemistry and Energetics of Chemical Reactions MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Thermochemistry and Energetics of Chemical Reactions questions
When a solid melts there is:
Internal energy is a sum of kinetic energy and potential energy. If internal energy of a system increases, then all of the following changes may take place EXCEPT:
Enthalpy is a state function. Standard enthalpy change is measured at:
Heat of solution for NaCI is:
Thermal energy is also called:
Hess's law is a simple application of: