Is a first order reaction always slower than a second order reaction

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Discussion Overview

The discussion revolves around the comparison of reaction rates between first order and second order reactions, specifically questioning whether a first order reaction is always slower than a second order reaction. The scope includes conceptual understanding relevant to general chemistry.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant notes that the rate of a second order reaction is proportional to the square of the concentration of the reactant, while a first order reaction's rate is directly proportional to the concentration.
  • Another participant suggests that the question may relate to collision theory, implying a connection between reaction order and molecular interactions.
  • A different participant claims to have found that a first order reaction can be slower than a second order reaction when both reactant concentrations are less than 1, indicating a specific condition where the relationship holds.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether a first order reaction is always slower than a second order reaction, with differing views on the conditions that may affect this comparison.

Contextual Notes

The discussion includes assumptions about concentration values and their effects on reaction rates, but these assumptions are not fully explored or resolved.

lalaland432
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This is a concept question i was wondering.
in what instances would this be true and in what instances would this be false.
im in general chem 2.
 
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i no that when the reaction is of second order the rate is squared according to how much the factor of the reactant is increased by. The first order reaction increases by the same factor by how much the concentration increases by.
 
I guess the question wants you to think in terms of collision theory.
 
well, i played around with it and i know that this circumstance is true when both concentrations are less than 1.
a second reaction concentration squared of a fraction equals a smaller fraction. :/
 

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