Problem: What must happen before a chemical reaction can begin?A.)The activation energy must be exceeded.B.)The activation energy must be reached.C.)The concentrations of products and reactants must be equal.D.) The concentration of reactant molecules must be reduced.

FREE Expert Solution

We are being asked to determine from the choices on what must happen before a chemical reaction can begin.


Recall that

  • the concentration of reactants and products increases or decreases the rate of the reaction
  • the activation energy is the energy barrier that has to be exceeded for a reaction to occur


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Problem Details

What must happen before a chemical reaction can begin?

A.)The activation energy must be exceeded.
B.)The activation energy must be reached.
C.)The concentrations of products and reactants must be equal.
D.) The concentration of reactant molecules must be reduced.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Energy Diagram concept. If you need more Energy Diagram practice, you can also practice Energy Diagram practice problems.