IB DP Chemistry: HL復習筆記15.2.3 Gibbs Free Energy
Gibbs Free Energy Change Gibbs free energy The feasibility of a reaction is determined by two factors, the?enthalpy change?and the??[popover id="F7rfknVfbfcSJVkN" label='entropy?change'] The two fa...
IB DP Chemistry: HL復習筆記15.2.2 Calculating Entropy Change
Calculating Standard Entropy Change The standard molar enthalpy values,?S?, relate to standard conditions of temperature and pressure The entropy change, ΔS?, can be calculated from thermodynamic d...
IB DP Chemistry: HL復習筆記15.2.1 Entropy
Entropy Entropy You may have wondered why it is that?endothermic?reactions occur at all, after all, what can be the driving force behind endothermic reactions if the products end up in a less stabl...
IB DP Chemistry: HL復習筆記15.1.5 Energy Changes in Aqueous Solutions
Measuring Energy Changes in the Lab Enthalpies of Solution Calorimetry can be used to find the energy change in chemical reactions. This is much easier to carry out in aqueous solutions We can take...
IB DP Chemistry: HL復習筆記15.1.4 Dissolution Energy Cycles
Dissolution Energy Cycles How are enthalpy of solution and hydration enthalpies related? The relationship between lattice enthalpy, hydration enthalpies and enthalpy of solution From the diagram we...
IB DP Chemistry: HL復習筆記15.1.3 Born-Haber Cycle Calculations
Born-Haber Cycle Calculations Once a Born-Haber cycle has been constructed, it is possible to calculate the lattice energy (ΔHlat?) by applying Hess’s law and rearranging: ΔHf??= ΔHat??+ ΔHat??+?IE...
IB DP Chemistry: HL復習筆記15.1.2 Born-Haber Cycles
Constructing Born-Haber Cycles A?Born-Haber cycle?is a specific application of?Hess's Law?for ionic compounds and enables us to calculate lattice enthalpy, which cannot be found by experiment The b...
IB DP Chemistry: HL復習筆記15.1.1 Key Enthalpy Terms
Key Enthalpy Terms Ionisation energy The?ionisation?energy?(ΔHIE?) is the standard enthalpy change that occurs on the removal of 1 mole of electrons from 1 mole of gaseous atoms or positively charg...
IB DP Chemistry: HL復習筆記14.2.3 Hybrid Orbitals
Hybrid Orbitals Hybridisation The ground state of the electrons in a carbon atom is 1s22s22p2 This can be represented using a spin diagram as shown: Orbital spin diagram for carbon in the ground st...
