Researching Autocatlytic Reactions: A Starting Point for Un-named Projects

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SUMMARY

The discussion centers on the challenges of researching autocatalytic reactions, specifically a proposed set of chemical equations: A + B = C + D, C + E = F + A, and D + F = E + B. Participants clarify that achieving a perpetual cycling of these reactions is thermodynamically impossible without an external energy source, as systems naturally approach equilibrium. References to Stuart Kauffman's work on autocatalytic reactions and the Belousov-Zhabotinsky reaction provide valuable insights into oscillatory reactions, which may offer alternative avenues for exploration.

PREREQUISITES
  • Understanding of autocatalytic reactions and their characteristics.
  • Familiarity with thermodynamics and the concept of equilibrium in chemical systems.
  • Knowledge of biochemical cycles and their role in reaction dynamics.
  • Basic grasp of stoichiometry and reaction kinetics.
NEXT STEPS
  • Research Stuart Kauffman's contributions to autocatalytic reactions.
  • Explore the Belousov-Zhabotinsky reaction and its implications for oscillatory systems.
  • Investigate the role of ATP hydrolysis in biological oscillatory reactions.
  • Study the principles of thermodynamics as they apply to chemical reactions and equilibrium.
USEFUL FOR

Chemists, biochemists, and researchers interested in reaction dynamics, particularly those exploring autocatalytic and oscillatory chemical systems.

  • #31
Just to finish my kinetic approach:

In addition to my stoichiometric equations above there is also this one:

<br /> \left[ A \right] - \left[ B \right] + \left[ E \right] = \left[ A \right]_0 - \left[ B \right]_0 + \left[ E \right]_0 <br />

The two required equations for the remaining components A an B result from the condition for the equilibrium:

<br /> k_1 \cdot \left[ A \right] \cdot \left[ B \right] = k_2 \cdot \left[ C \right] \cdot \left[ E \right] = k_3 \cdot \left[ D \right] \cdot \left[ F \right]<br />

this leads to

<br /> \left[ B \right] = \frac{{\left( {\left[ A \right]_0 + \left[ C \right]_0 - \left[ A \right]} \right) \cdot \left( {\left[ A \right]_0 - \left[ B \right]_0 + \left[ E \right]_0 - \left[ A \right]} \right)}}{{\left[ A \right] \cdot \left( {1 + \frac{{k_1 }}{{k_2 }}} \right) - \left[ A \right]_0 - \left[ C \right]_0 }}<br />

Now there is only one concentration left but unfortunately I can not solve the corresponding equation. Thus a numeric simulation seems to be the easiest way to get the equilibrium composition from kinetic parameters.
 

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