The enthalpy tell us about the heat that may be absorbed or evolved in a reaction. The ethalpy of this reaction is -100 kJ/mol.
<h3>What is enthalpy?</h3>
The term enthalpy deals with the heat that is absorbed or emitted in a reaction. The reaction equation is; HNO3 + KOH ----> KNO3 + H2O
Number of moles of HNO3 = 0.5 M * 50/1000 L = 0.025 moles
Number of moles of KOH= 0.5 M * 50/1000 L = 0.025 moles
Since the reaction is 1:1, then heat evolved = - (2500 J * 10^-3)/0.025 moles
= -100 kJ/mol
Learn more about enthalpy: brainly.com/question/9904853
