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, it becomes more favorable with increasing temperature) and accompanied by an increase in the entropy. Being lactonization de facto a dehydration process explains the positive enthalpy change. Furthermore, the overall number of molecules increases during the reaction, yielding positive entropy. It ...
DNA binding and cleavage properties of certain tetrammine ruthenium(II) complexes of modified 1,10-phenanthrolines--effect of hydrogen-bonding on DNA-bindi... A series of ruthenium(II) mixed ligand complexes of the type [Ru(NH 3) 4(L)] 2+, where L=imidazo[4,5- f][1,10]...
Table 3 Free energy change ∆G, enthalpy change ∆H, entropy change ∆S, translational entropy change ∆Strans, rotational entropy change ∆Srot and vibrational entropy change ∆Svib calculated in kcal/mol for the different amphibactin–metal complexes at B3LYP/M06/DEF2TZVP level. Ful...
The increasing demand for rare earth (RE) elements in advanced materials for permanent magnets, rechargeable batteries, catalysts and lamp phosphors necessitates environmentally friendly approaches for their recovery and separation. Here, we propose a mi
This partnership provides the foundation for supporting a learning community of preservice and practicing teachers that situates in collaborative practices that are both authentic and valuable to all involved. Specifically, we studied how issues of ownership, power, authenticity, and collaboration ...
Environmental protection and green development have become a common goal for countries and organisations worldwide, increasing pressure on firms to implement green transformation (GT) strategies. Environmental pollution liability insurance (EPLI) is a powerful risk management tool that transfers pollution li...
Adsorption parameter for entropy and enthalpy The following equation has been used to evaluate the entropy and enthalpy of adsorption: $$ln\left\{\frac{CR}{T}\right\}=log \left\{\frac{R}{{N}_{a}h}\right\}+ \frac{{\Delta S}_{a}}{R }- \frac{{\Delta H}_{a}}{RT}$$ ...
Adsorption thermodynamics analysis was performed to evaluate the enthalpy change (ΔH°), entropy change (ΔS°) and Gibbs free energy change (ΔG°) by the application of the given equations62: $$ \Delta G^{o} = - RT \, lnK_{c} $$ ...
Enthalpy A property of a system that combines internal energy and pressure-volume work. The enthalpy change for the reaction helps determine how much heat is produced. 13 Entropy Measures the randomness or unpredictability in a system. Mixing different gases increases entropy due to increased randomne...