NaOH + HCI→NaCl + H2O. Enthalpy change in the above reaction is called:
Correct answer: C. Enthalpy of neutralization
- A. Enthalpy of reaction
- B. Enthalpy of formation
- C. Enthalpy of neutralization
- D. Enthalpy of combustion
Explanation
The standard enthalpy of neutralization is the amount of heat evolved when one mole of H+ ions from an acid react with one mole of OH- ions from a base to form one mole of water under standard conditions i.e. 298K and one atmosphere pressure.
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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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