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Letty Liu 2C
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Joined: Fri Aug 09, 2019 12:16 am


Postby Letty Liu 2C » Tue Feb 18, 2020 5:08 pm

C(s) 1 H2O(g) ∆CO(g) 1 H2(g). (a) Evaluate K At 900 K, given that the standard Gibbs free energies of formation of CO(g) and H2O(g) at 900 K are 2191.28 kJ?mol21 and 2198.08 kJ?mol21, respectively. (b) A sample of graphite of mass 5.20 kg and 125 g of water were placed into a 10.0-L container and heated to 900 K. What are the equilibrium concentrations?

Whenever we're not given the standard Gibbs free energy of molecules, do we assume it's zero?

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Re: 5.55

Postby KeyaV1C » Tue Feb 18, 2020 7:01 pm

All elements in their standard states will have 0 as their standard Gibbs free energy of formation.

Aman Sankineni 2L
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Re: 5.55

Postby Aman Sankineni 2L » Tue Feb 18, 2020 7:28 pm

The standard Gibbs free energy of molecules is 0 for any element in its standard state.

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