Assuming the enthalpy of the reaction

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At 2000K and one bar, water vapor is 0.53% dissociated. At 2100 K and one bar, it is 0.88% dissociated. Calculate the value of Delta H bar degree (of reaction) for the dissociation of water at 1 bar, assuming the enthalpy of the reaction is constant from 2000 K to 2100 K H2O (g) --> H2 (g) + 1/2 O2 (g)

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