Page 1 of 1

Enthalpy

Posted: Tue Jan 29, 2019 6:03 pm
by Tamera Scott 1G
Why is the change in enthalpy equal to heat absorbed or released? How does that work?

Re: Enthalpy

Posted: Tue Jan 29, 2019 6:09 pm
by 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.

Re: Enthalpy

Posted: Tue Jan 29, 2019 7:02 pm
by 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.

Re: Enthalpy

Posted: Tue Jan 29, 2019 8:07 pm
by Jennifer Torres 2L
Yes, the delta H is equivalent to the enthalpy. You get the exact number using hess's law.

Re: Enthalpy

Posted: Wed Jan 30, 2019 12:40 am
by Yiting_Gong_4L
Delta H is the change in enthalpy.