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Thread: Entropy

  1. #1 Entropy 
    Forum Isotope Zelos's Avatar
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    many probebly know this equation
    dG=dH-TdS
    its gibbs free energy and entropy is
    dS=dH/T
    but its also so that
    dG0=-RT*ln(Keq)=dH0-TdS0
    and dG=dG0+RT*ln(Q)
    my question is how to get dH0 and dH and dS0 and dS from any other kind of equation. is there any possible way to get this informatin with anything simular to that up there? were u use equilibrium constant.

    And i also wonder if its possible in anyway to figure out of a molecule is stable if u have its structure


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  3. #2  
    Forum Senior silkworm's Avatar
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    I don't understand your questions, but I do understand Gibbs Free Energy. Could you clarify?

    And yes, there are many ways to figure out if a molecule is stable, but if you're just being introduced to Gibbs Free Energy, it might still be a little bit too early for you.


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  4. #3  
    Forum Isotope Zelos's Avatar
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    Its never to early for me. So what ever way you have just shoot man. My question is how do u calculate the entropy change and entalphy change in a reacyion if u know the equiribium constant for it.
    `
    If u know anyway to determen if the molecule is stable just tell me.
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  5. #4  
    Forum Isotope Zelos's Avatar
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    id really like to know how to figure out the stability of a molecule
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