Ch.13 - Chemical KineticsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: If the uncatalyzed reaction occurs in a single elementary step, why is it a slow reaction?a. All reactions that occur in one step are slow. b. The probability of an effective three-particle collision is low. c. The reaction requires the collision of three particles with the correct energy and orientation. d. The transition state is low in energy.

Problem

If the uncatalyzed reaction occurs in a single elementary step, why is it a slow reaction?

a. All reactions that occur in one step are slow. 

b. The probability of an effective three-particle collision is low. 

c. The reaction requires the collision of three particles with the correct energy and orientation. 

d. The transition state is low in energy.

Solution

We are asked why an uncatalyzed reaction is a slow reaction even when it occurs in a single elementary step.

Let us analyze each of the choices:

a. All reactions that occur in one step are slow. 

→ The rate of the reaction is affected by:

  • the surface area of a solid reactant
  • concentration or pressure of a reactant
  • temperature
  • nature of the reactants
  • presence/absence of a catalyst

→ Being a one-step process doesn't generally mean that it would be slow based on the above factors. -FALSE

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