The reactions that release heat are called as _.
Correct answer: B. Exothermic reactions
- A. Endothermic reactions
- B. Exothermic reactions
- C. Endergonic reactions
- D. Heat gaining reactions
Explanation
Option B "EXOTHERMIC REACTIONS" are those reactions in thermodynamics in which Heat is evolved or released (from system to surrounding) , Thus the right answer is B .
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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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