11) Calculate the activation energy (Ea) for a reaction if the rate constant is 35.0 at 25°C and the rate constant is 125 at 100°C. With a diagram, explain what the activation barrier represents.

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Chapter17: Spontaneity, Entropy, And Free Energy
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11) Calculate the activation energy (E.) for a reaction if the rate constant is 35.0 at 25°C and the rate
constant is 125 at 100°C. With a diagram, explain what the activation barrier represents.
12) Using the date table below, calculate the standard free-energy change, AG°, for the reaction at 25 °C?
Ng) + 3H2g) +→ 2NH3(g). Is this reaction spontaneous? Explain.
NH3(g)
193.0
S°, J/(K.mol)
AH (kJ/mol)
191.5
130.6
-45.9
Transcribed Image Text:11) Calculate the activation energy (E.) for a reaction if the rate constant is 35.0 at 25°C and the rate constant is 125 at 100°C. With a diagram, explain what the activation barrier represents. 12) Using the date table below, calculate the standard free-energy change, AG°, for the reaction at 25 °C? Ng) + 3H2g) +→ 2NH3(g). Is this reaction spontaneous? Explain. NH3(g) 193.0 S°, J/(K.mol) AH (kJ/mol) 191.5 130.6 -45.9
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