Moderate

Half-lives required to convert 100% reactant to product for a first order reaction are:

Correct answer: D. Infinity

  • A. 10
  • B. 100
  • C. 1000
  • D. Infinity

Explanation

Option D, "Infinity," is correct for a first-order reaction because any reaction never completely converts all of the reactant to product, regardless of the time allowed.

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About Reaction Kinetics

Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.

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