# Rate, Equilibrium, and Acidity/Basicity Constant

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#### letaps

##### Full Member
15+ Year Member
Hey,

I know that reactant, concentration, temperature, medium, catalysts, and volume/pressure affect the equilbrium constant. What factors affect the rate constant and the acidity/basicity constant (Ka/Kb)?

Thanks

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Hey,

I know that reactant, concentration, temperature, medium, catalysts, and volume/pressure affect the equilbrium constant. What factors affect the rate constant and the acidity/basicity constant (Ka/Kb)?

Thanks

I'm pretty sure concentration and catalysts don't change the equilibrium constant.

Hey,

I know that reactant, concentration, temperature, medium, catalysts, and volume/pressure affect the equilbrium constant. What factors affect the rate constant and the acidity/basicity constant (Ka/Kb)?

Thanks

NONE of the above alter the equilibrium constant EXCEPT TEMPERATURE!!!! The acid and base constants are equilibrium constants, and thus, are only affected by temperature. The rate constant k can be explained by the Arrhenius equation which states that K is dependent upon the activation energy (and thus catalysts), temperature, and the frequency of collisions that collide with sufficient energy. Don't confuse k in kinetics/rate laws with the K in equilibrium. They are NOT the same thing.

just seconding pookiez for the OP's wellbeing. G=-RTln(Keq) [it's really G0, or sumtin like that when Keq and not just K, but for arguments sake] you should know the delta G of a reaction is always the same. So only T affects Keq....

The rate law has to be determined experimentally (remember when the conc. of 1 doubles, the product quadruples meaning 2nd order, etc...) and temp/catalysts/concentrations/etc all affect the RATE K

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so, just to summarize, reactant, concentration, temperature, medium, catalysts, and volume/pressure affect the rate consant. And only the equilbrium, Ka, and Kb consants are only affected by temperature...

so, just to summarize, reactant, concentration, temperature, medium, catalysts, and volume/pressure affect the rate consant. And only the equilbrium, Ka, and Kb consants are only affected by temperature...

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