Asked in Premeth Test 23 — Chemical Kinetics and Chemical Equilibrium (25 March 2025) 2025Moderate

In transition state, the reactants are:

Correct answer: C. Highly unstable

  • A. Highly stable
  • B. Moderate stable
  • C. Highly unstable
  • D. In the low energy state

Explanation

The transition state (or activated complex) occurs at the maximum of the potential energy diagram along the reaction coordinate.It is a very short-lived, high-energy state where bonds are partially broken and partially formed.

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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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