define enthalpy of nutralisation
Answers
Explanation:
The enthalpy of neutralization is the change in enthalpy that occurs when one equivalent of an acid and a base undergo a neutralization reaction to form water and a salt. It is a special case of the enthalpy of reaction. It is defined as the energy released with the formation of 1 mole of water
Answer:
The enthalpy of neutralization (ΔHn) is the change in enthalpy that occurs when one equivalent of an acidand a base undergo a neutralization reaction to form water and a salt. It is a special case of the enthalpy of reaction. It is defined as the energy released with the formation of 1 mole of water.
When a reaction is carried out under standard conditions at the temperature of 298 K (25 degrees Celsius) and 1 atm of pressure and one mole of water is formed it is called the standard enthalpy of neutralization (ΔHn⊖).
The heat (Q) released during a reaction is
{\displaystyle Q=mc_{p}\Delta
where m is the mass of the solution, cp is the specific heat capacity of the solution, and ∆T is the temperature change observed during the reaction. From this, the standard enthalpy change (∆H) is obtained by division with the amount of substance (in moles) involved.
{\displaystyle \Delta H=-{\frac {Q}{n}
When a strong acid, HA, reacts with a strong base, BOH, the reaction that occurs is
{\displaystyle {\ce {H+ + OH^- -> H2O