Question

In a reaction, the threshold energy is equal to:

• A. Activation energy + normal energy of reactants
• B. Activation energy - normal energy of reactants
• C. Normal energy of reactants - activation energy
• D. Average kinetic energy of molecules of reactants

Hint:

Threshold energy is always greater than or equal to activation energy.

Answer 1

The Correct Option is A

Step 1: Understanding threshold energy.
Threshold energy is the minimum energy required for a reaction to occur. It is given by: \[ E_{{threshold}} = E_{{activation}} + E_{{reactants}} \] Step 2: Identifying the correct option.
Since activation energy is the additional energy needed beyond the reactant’s normal energy, the threshold energy is their sum.