Question

What Causes Enthalpy To Increase?

Answer 1

Enthalpy

1. Enthalpy is defined as the heat energy in a system. Enthalpy is equal to the sum of the total internal energy of the system and the product of pressure and volume.
2. It is denoted by H.
3. Mathematically $$\begin{gathered} \mathrm{H}=\mathrm{U}+\mathrm{PV} \\ \mathrm{where}\mathrm{H}=\mathrm{Enthalpy}\mathrm{of}\mathrm{the}\mathrm{system} \\ \mathrm{U}=\mathrm{Total}\mathrm{inernal}\mathrm{energy} \\ \mathrm{P}=\mathrm{Pressure} \\ \mathrm{V}=\mathrm{Volume} \end{gathered}$$

Factors affecting enthalpy

1. Physical state of Reactant and products- The enthalpy of the system changes when the Physical state of reactant and products changes. This is due to the release of Heat.
2. Number of Reactants- When we increase the number of reactants, the enthalpy also increases.
3. Temperature and Pressure- If we increase the temperature and pressure the enthalpy also increases.