Reactions of Alkenes and Alkynes - What is a Reaction Mechanism?

4 important questions on Reactions of Alkenes and Alkynes - What is a Reaction Mechanism?

Give the definition of a reaction mechanism.

A reaction mechanism is a step-by-step description of a chemical reaction.

What is the reaction coordinate?

The reaction coordinate is shown on the horizontal axis of an energy diagram and shows how far the reaction has progressed.

What is the heat of reaction?

The heat of reaction or ΔH, is the difference in energy between reactants and products. When heat is released it is called exothermic, when heat is absorbed it is called endothermic.
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Describe the energy diagram of a two-step exothermal reaction.

Since it is a two step reaction, two transition states are formed with an intermediate in between. Both steps require activation energy.

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