Question

While performing a thermodynamics experiment, a student made the following observations,

$HCl + NaOH \rightarrow NaCl + H _2 O$

$\Delta H =-573 \,kJ \,mol ^{-1}$

$CH _3 COOH + NaOH \rightarrow CH_3COONa + H _2 O$

$\Delta H =-553 \,kJ\, mol ^{-1}$

The enthalpy of ionization of $CH _3 COOH$ as calculated by the student is _____ $kJ \,mol ^{-1}$ (nearest integer)

Answer 1

The correct answer is 2
ΔHionisation ​ of CH3​COOH=∣−57.3−(−55.3)∣
=2KJ/mol