Question

What is the enthalpy of neutralization for CH₃COOH + NaOH?

• A. Less than 57.1 kJ/mol
• B. 57.1 kJ/mol
• C. More than 57.1 kJ/mol
• D. Zero

Hint:

The enthalpy of neutralization for a strong acid and strong base is approximately -57.1 kJ/mol (exothermic). For reactions involving a weak acid or a weak base, the magnitude of the enthalpy of neutralization will be less than 57.1 kJ/mol because some energy is absorbed for the ionization of the weak electrolyte.