Which of the following statements about enthalpy of neutralization is correct? It
Answer Details
Enthalpy of neutralization is the heat released or absorbed when an acid and a base react together to form a salt and water. The enthalpy of neutralization depends on the strength of the acid and the base involved in the reaction. The correct statement about enthalpy of neutralization is that it is constant for a strong acid and a strong base. This is because, in a strong acid-strong base neutralization reaction, the acid and the base completely ionize in solution, forming H+ and OH- ions respectively. The reaction between H+ and OH- ions is highly exothermic and releases a constant amount of heat. This constant value of heat released per mole of acid-base reaction is known as the enthalpy of neutralization. Therefore, the correct option is: "enthalpy of neutralization is constant for a strong acid and a strong base."