Enthalpy

[Tamera Scott 1G]

Why is the change in enthalpy equal to heat absorbed or released? How does that work?

[AdityaGuru1H]

enthalpy is defined as the heat in the system so when we are talking about deltaH that is the change in enthalpy between a product and reactant. We can say that heat released is negative because we measure deltaH by products - reactants and if it is exothermic the heat of the product is less than reactant making the final answer negative.

[Erin Kim 2G]

Enthalpy is the study of heat absorbed or released in a chemical reaction. So when you calculate the change of heat in a system, you are calculating the enthalpy of the system. It can be represented by deltaH.

[Jennifer Torres 2L]

Yes, the delta H is equivalent to the enthalpy. You get the exact number using hess's law.

[Yiting_Gong_4L]

Delta H is the change in enthalpy.