What is the value of enthalpy of neutralization when one mole of base reacts with one mole of acid?
Correct answer: D. -57.4kJ/mol
- A. -60.5 kJ/mol
- B. -46.5kJ/mol
- C. -70.5 kJ/mol
- D. -57.4kJ/mol
Explanation
Option A: This option suggests a value of -60.5 kJ/mol for the enthalpy of neutralization. However, the commonly accepted value is -57.4 kJ/mol, so this option is not correct. Option B: This option suggests a value of -46.5 kJ/mol for the enthalpy of neutralization. However, the commonly accepted value is -57.4 kJ/mol, so this option is not correct. Option C: This option suggests a value of -70.5 kJ/mol for the enthalpy of neutralization. However, the commonly accepted value is -57.4 kJ/mol, so this option is not correct. Option D: The value of the enthalpy of neutralization when one mole of base reacts with one mole of acid is typically around -57.4 kJ/mol.
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About Enthalpy
Enthalpy is the heat content of a system measured at constant pressure, and its change indicates whether a reaction or physical process is endothermic or exothermic. The topic covers state functions, enthalpy diagrams, standard enthalpy of formation, combustion and neutralisation, and the relationship between ΔH and internal energy change.
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