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Gibbs, energetics and calculations

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by

Harvey Buckle

on 5 September 2016

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Transcript of Gibbs, energetics and calculations

Aim
HL To know the definition of entropy and Gibbs free energy (GFE)
HL To know the influence of Entropy and GFE on an enthalpy of reaction
SL/HL To know the factors affecting Lattice enthalpy LE
SL/HL To know the energetics behind dissolving
HL To perform Born - Haber cycle calculations

To know
Entropy (S) refers to the distribution of available energy among the particles.
The more ways the energy can be distributed the higher the entropy.
• Gibbs free energy (G) relates the energy that can be obtained from a chemical
reaction to the change in enthalpy (ΔH), change in entropy (ΔS), and absolute
temperature (T).
• Entropy of gas>liquid>solid under same conditions.
Entropy, Gibbs, BH, LE, dissolving and calculations
5th september 2016
Born - Haber cycle
Entropy 2
Entropy
G H S and T linked
Watch Mr Harvey
Calculations anyone?
Born Haber calculations
Watch Mr Harvey
Solubility of Salts
Watch Mr Harvey
Factors affecting LE
1. Charge
2. Size
Full transcript