Free Energy

Card Set Information

Author:
Anonymous
ID:
193216
Filename:
Free Energy
Updated:
2013-01-16 15:11:22
Tags:
Chemistry
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Description:
Advanced Higher Chemistry - Unit Two - Free Energy
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  1. The second law of thermodynamics states that for a reaction to be feasible the total entropy of a reaction system must increase.  Does this mean the total entropy change will be positive or negative?
    Positive
  2. Heat energy released by the reaction system into the surroundings ________ the entropy of the surroundings?
    increases
  3. Heat energy absorbed by the reaction from the surroundings ______ the entropy of the surroundings?
    decreases
  4. What equations are used to calculate the change in free energy (Gibb's free energy)?
    • ΔG˚ = ΔH˚ - TΔS˚
    • ΔG˚= ΔG˚(Products) - ΔG˚(Reactants)
  5. Under non-standard conditions any reaction is feasible is ΔG is positive or negative?
    negative
  6. When does ΔG = 0?
    At equilibrium

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