q and delta H
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q and delta H
Hello, I was wonder if q and delta H are the same thing? Because I see them being use interchangeably.
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Re: q and delta H
I think q = delta H under constant pressure. I also think that delta H implies constant pressure already so they can be used interchangeably but I am not sure.
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Re: q and delta H
q is equal to delta H when pressure is constant.
This gives you:
delta U = delta H - P(delta V)
This gives you:
delta U = delta H - P(delta V)
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Re: q and delta H
the definition of enthalpy is the change in heat of a system at constant pressure. so q = deltaH at constant pressure.
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Re: q and delta H
delta H = delta U + P delta V
when there is a constant pressure,
delta H= q
I think the q comes from the delta U (as delta U= q +w)
Hope this helps.
when there is a constant pressure,
delta H= q
I think the q comes from the delta U (as delta U= q +w)
Hope this helps.
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- Posts: 59
- Joined: Fri Sep 28, 2018 12:18 am
Re: q and delta H
So Delta U = q + w = q - PdeltaV, meaning that under constant pressure U = q = delta H. This is where most of the interchangeability comes from as systems with constant pressure appear often in our problems.
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