| 41. | Therefore, the temperature for thermochemical sulfate reduction is much higher due to the activation energy required to reduce sulfate.
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| 42. | With E _ a \, the activation energy and \ Delta H _ r \, the reaction enthalpy change.
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| 43. | The sparks generated by striking steel against flint provide the activation energy to initiate combustion in this bunsen burner.
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| 44. | The activation energy, Ea, is used to characterize how easy or hard it is for the reaction to proceed.
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| 45. | For outer sphere redox reactions there cannot be such a reaction path, but nevertheless one does observe an activation energy.
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| 46. | Hemilabile ligands reduce the activation energy of these changes by readily undergoing partial and reversible displacement from the metal centre.
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| 47. | The relationship implies that the Gibbs free energy for proton dissociation is proportional to the activation energy for the catalytic step.
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| 48. | This observation is made reasonable assuming that the units must overcome an energy barrier by means of a thermal activation energy.
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| 49. | The apparent activation energy ( Q ) may be related to the thermally activated atomistic processes that occur during boundary movement.
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| 50. | The reaction is exothermic but has a high activation energy in the gas phase ( ~ 62 kcal / mol ).
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