For a particular reaction, ?H = -14.20 kJ/mol and ?S = -198.5 J/(mol·K). Calculate ?G for this reaction at 298 K. Number kJ / mol What can be said about the spontaneity of the reaction at 298 K? The system is spontaneous in the reverse direction. The system is at equilibrium. The system is spontaneous as written.
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Since AH is given in kJ/mol, let's convert AS to kJ/(mol·K) by dividing by 1000: AS = -198.5 J/(mol·K) / 1000 = -0.1985 kJ/(mol·K) Now, we can use the formula for Gibbs free energy (ΔG) at a given temperature (T): ΔG = ΔH - TΔS Plug in the given values and Show more…
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