7 thermo website (1)

# 7 thermo website (1) - energy to reach equilibrium 6 7...

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1 The meaning of  G rxn At constant temperature and pressure the sign indicates the spontaneity of the reaction. G rxn < 0 means spontaneous G rxn > 0 means not spontaneous (or spontaneous in the opposite direction) If we change the temperature we can change the sign of G rxn The magnitude of G rxn tells us the relative extent of the reaction. If we change the temperature we can change the magnitude of G rxn .

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2 Questions To Consider Why do systems reach equilibrium? That is, why doesn’t the ball go all the way down the hill?
3 Energy

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4 Free  energies  change as a  reaction  progresses
5 The change in free

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Unformatted text preview: energy to reach equilibrium 6 7 Clicker Question 1 2SO 2 (g) + O 2 (g) → 2SO 3 (g). ∆ G ° (kJ/mol) -300 0 -371 ∆ H ° (kJ/mol) -297 0 -396 S ° (J/Kmol) 248 205 257 Determine the value of K at 25 ° C. a) 8 x 10 24 b) 1 c) 1 x 10-25 d) I know how to do this but I am not getting any of the above answers. e) I do not know how to do this problem. 8 Exothermic vs. Endothermic...
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