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university gibbs energy simple ?
http://en.wikipedia.org/wiki/Gibbs_free_energy
The equation dG=, on the defonition part. what does the d represent cus thought it was delta but isn't due to y dont they use the delta symbol ( which they do do later on )
sorry for uch a silly ? cheers for any help
mark
The equation dG=, on the defonition part. what does the d represent cus thought it was delta but isn't due to y dont they use the delta symbol ( which they do do later on )
sorry for uch a silly ? cheers for any help
mark
Yeah it's delta I'm pretty sure. Nothing else it could be.
It talks about change in Gibbs energy so it seems right
It talks about change in Gibbs energy so it seems right
d or delta both mean change in.
cheers people
Errr, no, . The function 'dG' is the differential of G. See here if you don't know what that is.
So the fundamental equation for Gibbs energy is dG=Vdp-SdT (as can easily be shown from first principles), and one of the good things about writing it like this is that you know instantly, since Gibbs energy is a state function (and which therefore behaves 'nicely' - i.e. you can write the total derivative), that
and so on.
on the other hand represents a change in Gibbs energy from some place to another, usually the Gibbs energy change of a reaction or phase transition and so forth.
(Also, for reference, is the partial derivative of G with respect to p.)
So the fundamental equation for Gibbs energy is dG=Vdp-SdT (as can easily be shown from first principles), and one of the good things about writing it like this is that you know instantly, since Gibbs energy is a state function (and which therefore behaves 'nicely' - i.e. you can write the total derivative), that
and so on.
on the other hand represents a change in Gibbs energy from some place to another, usually the Gibbs energy change of a reaction or phase transition and so forth.
(Also, for reference, is the partial derivative of G with respect to p.)
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