Entropy 0.0 / 5 ? ChemistryEntropyA2/A-levelOCR Created by: a.paulCreated on: 24-02-20 09:41 Entropy? the different number of ways a system can be arranged and the level of 1 of 12 High Entropy vs Low Entropy High entropy suggests that the system can be arranged in 2 of 12 How much entropy do gases have? gases have high entropy because the particles are free to move 3 of 12 How much entropy do solids have? Solids have low 4 of 12 Can Entropy change during a chemical reaction? Yes... entropy of a system can change during a chemical reaction depending on what is produced 5 of 12 Formula for Entropy of Reaction Entropy (Products) - Entropy(Reactants) 6 of 12 Spontaneous/Feasible Reaction? A reaction that can take place on its own accord 7 of 12 What 2 factors determine the feasibility of a reaction? Enthalpy Change and Entropy 8 of 12 Formula for Gibbs Free energy ΔG = ΔH - TΔS 9 of 12 If gibbs free energy value is negative, is the reaction feasible? If ΔG is a negative value, a reaction is feasible. The more negative the value the more 10 of 12 If gibbs free energy is 0, is reaction feasible? If ΔG is zero a reaction is in equilibrium and feasible. 11 of 12 if gibbs free energy is positive is the reaction feasible? If ΔG is a positive value, a reaction is not feasible. 12 of 12
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