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MDCAT
Chemistry
2021

Chemistry · Reaction Kinetics

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

Half-life α 1/a(n-1) where n is:

Options
  • A

    Number of reactant molecules

  • B

    Number of moles of reactants

  • C

    Number of moles of products

  • D

    Order of Reactions

Explanation

The formula for the half-life of a reaction, t1/2 = 1 / [A(a(n-1))], includes the term (n-1), where n represents the order of the reaction. 

It is an incorrect option. The half-life is not determined by the number of reactant molecules.

It is an incorrect option. The half-life is not determined by the number of moles of reactants.

It is an incorrect option. The half-life is not determined by the number of moles of products.

The formula for the half-life of a reaction, t1/2 = 1 / [A(a(n-1))], includes the term (n-1), where n represents the order of the reaction. 

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Tagged under Chemistry · Reaction Kinetics · 2021