## Enthalpy

Tamera Scott 1G
Posts: 65
Joined: Fri Sep 28, 2018 12:27 am

### Enthalpy

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

Posts: 65
Joined: Fri Sep 28, 2018 12:17 am

### Re: Enthalpy

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
Posts: 75
Joined: Fri Sep 28, 2018 12:26 am

### Re: Enthalpy

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
Posts: 62
Joined: Tue Nov 14, 2017 3:01 am

### Re: Enthalpy

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

Yiting_Gong_4L
Posts: 69
Joined: Fri Sep 28, 2018 12:25 am

### Re: Enthalpy

Delta H is the change in enthalpy.

Return to “Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)”

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