Chemistry - Thermochemistry Question with Solution | TestHub

$\mathrm{MgO}$ is salt of weak base. Thus, enthalpy of neutralisation for $\mathrm{MgO}$ will be less than $-57.33\mathrm{kJ}{\mathrm{mol}}^{-1}$. Related Theory The enthalpy of neutralization of any strong acid with a strong base is always the same, i.e., $57.1\mathrm{kJ}$. This is because the strong acids, strong bases and the salts they form, are all completely ionized in dilute aqueous solution.