Test: MCAT Physical

For any given chemical reaction, one can draw an energy diagram. Energy diagrams depict the energy levels of the different steps in a reaction, while also indicating the net change in energy and giving clues to relative reaction rate. 

Below, a reaction diagram is shown for a reaction that a scientist is studying in a lab. A student began the reaction the evening before, but the scientist is unsure as to the type of the reaction. He cannot find the student’s notes, except for the reaction diagram below.

 

 

Untitled

1.

What factors, not depicted in the reaction diagram, are most likely to influence reaction rate?

Intermediate stability

Reactant concentrations

Reactant stability

Product stability

Free energy change

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