Which pair will show highest enthalpy of neutralization
Correct answer: B. HCl and Ba(OH)2
- A. KOH and NaOH
- B. HCl and Ba(OH)2
- C. Ca(OH)2 and CH3COOH
- D. H2SO4 and KOH
Explanation
The enthalpy of neutralization is the heat evolved when an acid and a base react to form one mole of water under standard conditions (constant pressure and temperature). The enthalpy change for a neutralization reaction is generally negative because it releases heat.
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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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