Abstract
Thermodynamic properties and equilibrium constant of reaction in nanosystems were analyzed theoretically. The effects of sizes of nano-CuO on thermodynamic properties and equilibrium constant were studied using the reaction of nano-copper oxide and sodium bisulfate as a system. The experimental results indicate that with the sizes of reactant decreasing, the molar Gibbs free energy (Δ r G m ), the molar enthalpy (Δ r H m ) and the molar entropy (Δ r S m ) decrease, but the equilibrium constant ( K) increases and there are linear trends between the reciprocal of sizes for nano-CuO and the values of Δ r G m , Δ r H m , Δ r S m and Ln K, which are in agreement with the theoretical analysis.
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