Asked Jan 7, 2020

 Explain the difference between the spontaneity of a reaction (which depends on thermodynamics) and the speed at which the reaction occurs (which depends on kinetics). Can a catalyst make a nonspontaneous reaction spontaneous? 


Expert Answer

Step 1

Spontaneity refers to the directionality of a process —that is, whether or not it has a tendency to happen (or will happen “by itself”) in the forward direction .


Speed refers to the rate at which a (spontaneous) reaction will occur.

Kinetics refers to the rate at which processes occur depends on the nature of the            pathway by which the system goes from the initial state to the final state.

 Spontaneous processes can be incredibly fast (if the overall activation energy of               the process is very small and reactant concentrations are high) or unfathomably               slow (if the overall activation energy of the process if very large).



Step 2

The speed of the reaction tells about how much ...

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