Delta H

Moderators: Chem_Mod, Chem_Admin

Post Reply
Yousif Jafar 1G
Posts: 59
Joined: Thu May 10, 2018 3:00 am

Delta H

Postby Yousif Jafar 1G » Sat Feb 09, 2019 3:22 pm

When does delta H = q ?
Top
Ana Pedreros
Posts: 62
Joined: Fri Sep 28, 2018 12:19 am

Re: Delta H

Postby Ana Pedreros » Sat Feb 09, 2019 3:47 pm

Delta H equals q when there is no work done (this could happen when the volume does not change). this means that the enthalpy change equals the heat that is exchanged between the system and its surroundings
Top
eden tefera 2B
Posts: 39
Joined: Fri Sep 28, 2018 12:21 am

Re: Delta H

Postby eden tefera 2B » Sun Feb 10, 2019 12:53 pm

To add, delta H can also equal w if the temperature of the system is not changing because delta h = q+w and q would then be zero.
Top
Ronald Thompson 1F
Posts: 59
Joined: Fri Sep 28, 2018 12:25 am

Re: Delta H

Postby Ronald Thompson 1F » Sun Feb 10, 2019 2:19 pm

q can also equal -w.
Top
Kriti Goyal 4K 19
Posts: 32
Joined: Fri Sep 28, 2018 12:21 am

Re: Delta H

Postby Kriti Goyal 4K 19 » Sun Feb 10, 2019 2:20 pm

q and H are interchangeable terms. Heat is the same thing as Enthalpy. However q is equal to U only when no work is done.
Top
Post Reply

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

Who is online

Users browsing this forum: No registered users and 5 guests