In exothermic reactions forward reactions need _.
Correct answer: C. Less Energy
- A. More Energy
- B. No energy
- C. Less Energy
- D. A catalyst
Explanation
Exothermic reactions are bond-making reactions in which heat energy is released. So the activation energy required for forward reaction in an exothermic reaction is always smaller than backward reaction as heat energy is released. So products will have less energy than reactants. Option C is correct.
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About Activation Energy and Activated Complex
Activation energy is the minimum energy reactant particles need to form the activated complex, or transition state, during a reaction. Energy profile diagrams show the forward and reverse activation energies, while catalysts provide an alternative pathway with lower activation energy without changing the reaction enthalpy.
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