Equilibrium constant and rate constant

Click For Summary
SUMMARY

The discussion clarifies the relationship between the equilibrium constant (K) and the rate constant (k) in chemical kinetics. K represents the ratio of equilibrium concentrations, while k denotes the rate constant for a specific reaction. It is established that the equilibrium constant can be expressed as the ratio of the forward and reverse rate constants. This distinction is crucial for understanding reaction dynamics and equilibrium behavior in chemical systems.

PREREQUISITES
  • Understanding of chemical kinetics
  • Familiarity with equilibrium concepts
  • Knowledge of rate laws and reaction rates
  • Basic grasp of chemical thermodynamics
NEXT STEPS
  • Study the derivation of the equilibrium constant from rate constants
  • Learn about the Arrhenius equation and its application to rate constants
  • Explore the differences between Kp and Kc in gas-phase reactions
  • Investigate the impact of temperature on equilibrium constants
USEFUL FOR

Chemistry students, chemical engineers, and researchers in the field of physical chemistry who are looking to deepen their understanding of reaction kinetics and equilibrium relationships.

pixel01
Messages
688
Reaction score
1
Hi every body,

I am just asking myself if the two constants K and k have some relations with each other. Could anyone explain more about this?

Thanks
 
Engineering news on Phys.org
could you be more specific? Are you talking about Ka, Kb, Kp, Kc or something else?
 
Ha, I failed to notice one is capitalized (K) and the other is not(k)! (im going blind)

I should then say that the relations seem more than obvious.
 
Thank you for your answering me. Anyway, could you please explain a little bit more ?
 
k is a rate constant for kinetics

K is a ratio of equillibrium compositions

I think that is what you needed?
 
sicjeff said:
k is a rate constant for kinetics

K is a ratio of equillibrium compositions

I think that is what you needed?

No, they are different, totally.
 
Equilibrium is where the forward reaction and reverse reaction have the same rate.

The equilibrium constant will be equal to the ratio of the rate constants.

Is that what you were looking for?
 

Similar threads

Chemistry Relationship between chemical equilibrium and rate equilibrium
  • · Replies 2 ·
Replies
2
Views
2K
Continuous process and equilibrium constant.
  • · Replies 7 ·
Replies
7
Views
2K
Rate constant help for this reaction please
  • · Replies 2 ·
Replies
2
Views
2K
Reaction kinetics + Gillespie algorithm: Propensity function?
  • · Replies 1 ·
Replies
1
Views
3K
Extraction Flash Calculation - 4 Component and 2 Phase System
  • · Replies 2 ·
Replies
2
Views
2K
Zeroth Law of Thermodynamics
  • · Replies 5 ·
Replies
5
Views
619
Chemistry Are there infinite combinations of partial pressures that give the same chemical equilibrium constant?
  • · Replies 28 ·
Replies
28
Views
2K
Undergrad Equilibrium constant change with stoichiometric doubling (Callen)?
  • · Replies 5 ·
Replies
5
Views
2K
Query on Isentropic relationships (such as PV^gamma = constant)
  • · Replies 1 ·
Replies
1
Views
730
Equilibrium constants Ka, Kc, Kx, Kp and rate constants in reversible reactions
  • · Replies 7 ·
Replies
7
Views
34K