3. For the reaction CO(NH2)2(aq) + H2O(l) -> CO2(g) + 2 NH3(g), the standard enthalpy of reaction △RH o is 119 kJ, and the standard entropy of reaction △RS o is 354.8 J K-1 . Assuming that △RH o and △RS o remains constant in the temperature range of 25oC to 75oC, calculate the Gibbs energy change △RG o for the reaction at the following temperatures: (a) 25oC; (b) 75oC. Answer: [13.3; ─4.5]

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