relationship between delta H and q  [ENDORSED]

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Nick_Kopooshian_3C
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Joined: Fri Jul 22, 2016 3:00 am

relationship between delta H and q

Postby Nick_Kopooshian_3C » Tue Jan 17, 2017 12:48 pm

When is delta H and q interchangeable?
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Cindy Flores 2C
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Joined: Wed Sep 21, 2016 2:59 pm

Re: relationship between delta H and q  [ENDORSED]

Postby Cindy Flores 2C » Tue Jan 17, 2017 12:49 pm

Great question, delta H and q are interchangeable only when there is heat under constant pressure.
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Jeannie_Kim_1I
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Joined: Fri Jul 15, 2016 3:00 am

Re: relationship between delta H and q

Postby Jeannie_Kim_1I » Tue Jan 17, 2017 2:26 pm

Delta H is considered a specific type of q. Delta H=qp.
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Janice Kim 3I
Posts: 33
Joined: Wed Sep 21, 2016 2:56 pm

Re: relationship between delta H and q

Postby Janice Kim 3I » Wed Jan 18, 2017 11:54 am

If pressure is held constant, q will have a subscript p (qp), making it interchangeable with delta H.
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Kevin Le 1L
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Joined: Fri Jul 22, 2016 3:00 am

Re: relationship between delta H and q

Postby Kevin Le 1L » Wed Jan 18, 2017 12:28 pm

Like the others said above, q and delta H are interchangeable only when a system is under constant pressure. However, we can calculate q using delta H during phase changes. q = (mass)(delta H at a phase change).
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