The false statement among the following is:
Correct answer: D. The heat of formation of a compound is equal in magnitude to the heat of combustion
- A. The heat liberated during the neutralization of a strong acid and a strong base in aqueous solution is constant
- B. The heat of combustion is always an exothermic change
- C. The enthalpies of the formation of carbon dioxide can be conveniently determined if the heat of combustion data of carbon is given
- D. The heat of formation of a compound is equal in magnitude to the heat of combustion
Explanation
The statement is not true. The heat of formation and the heat of combustion are two different thermodynamicquantities related to chemical reactions, and their magnitudes are not necessarily equal for all compounds.
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
Which is not characteristic of a thermochemical equation:
The study of heat changes that accompany a chemical reaction is called:
Change in enthalpy is defined as:
∆H for the transition of carbon in the diamond form to carbon in the graphite form is 1.9kJ. This suggests that:
The magnitude of heat of solution on addition of solvent to solution is:
Which one of the following is NOT the unit of heat: