gas constant for gibbs free energy
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gas constant for gibbs free energy
when using the gas constant for the gibbs free energy equation (delta G= -RTlnK), do you always use 8.314 J/mol.K?
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Re: gas constant for gibbs free energy
Yes, because the units for Gibbs free energy is J/mol or kJ/mol and you cancel out the K with temperature.
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Re: gas constant for gibbs free energy
Whenever using the gas constant, you are always trying to match up the units. In the case of G=RTlnK you are always going to use 8.314 J/mol.K because the units match (G is in J/mol, T is in kelvin).
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Re: gas constant for gibbs free energy
Gibbs free energy is in J/mol and temperature is in Kelvins. Therefore, you would use 8.314 J/mol.K in order to cancel out all the units and find a value for K (which does not have any units).
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Re: gas constant for gibbs free energy
Yes you would use 8.314 J/mol*K because the units for Gibbs Free Energy involves J/mol or kJ/mol. Thus, when using the equation delta G= -RTlnK you would use 8.314 J/mol*K as the value of the Gas constant.
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Re: gas constant for gibbs free energy
Yes, since that R-value is in J/Kmol (or kJ/Kmol), which can be cancelled out to give you an appropriate value (in units) for G (J/mol).
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