A few Chemistry equations to understand conceptually or mathematically?

[MCAT4life]

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Hi chem gurus,

I've got a quick question on how MCAT could test these following equations

k = Ae-Ea/RT (Arrhenius equation) for rate of chemical reaction.

ΔG° = -RT ln (Keq) (relating equalibrium constant and standard free energy change).

Vander waals equation for difference between real/ideal gases.

Vander waals should be given in passage, but I was wondering what kind of application the other 2 could have to MCAT passages? I understand conceptually what they mean, but could we be tested on mathematically applications for Arrehenius and the free energy equation? for example given Keq we have to solve for delta G or (would a conceptual understanding that when Keq increases (more product over reactants), Delta G decreases (more spontaneous) be sufficient?

 

[loveoforganic]

Calculations I think would be unlikely. Would be more like "which of these changes would result in a change in reaction rate;" where sample good answers would be along the lines of "adding a catalyst that decreases the activation energy" or "increasing the temperature."

Don't think you need to be able to calculate anything that involves a natural log unless that calculation is going to cancel out.

 

[MCAT4life]

Alright thanks bro.