List of GC formulas.....

[DentalFrog]

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Is there a list of all of the Gen Chem formulas we may need to know for the test out there? There are a lot of them and I wanted to see if anyone had a list compiled of the ones that could be on the test that were all in one place....

 

[quackwhacker]

ph=pka +log A/HA
ph= given kb = 14-(kb x [A) ^1/2
G=delta H-T delta S
D=P x MM/ RT
P1 V1 / T1 = P2 V2/ T2
delta Tf= kf m (same for boiling)
os pressure=MRT
ksp of MX3 =27x^4 where x is the mol sol
ksp of MX2=4x^3
P1V1=P2V2
%yield= actual/ theoretical
spec heat formula heat=mass x specific heat x delta T
formal charge= group # - [1/2 # shared e + # unshared e]
C= 5/9 (F-32) K= C + 273
vapor pressure= mole fraction x vapor pressure pure solv
(gases) delta G= -RT ln keq
pka=-log ka
delta G = -nFEcell n=# electrons transferred and F=Faradays constant
Molarity=moles/ Lsol
molality=moles solute/ kg sol
limiting reagent=lower number of moles of reagent



This should cover most of the things you see on the DAT (at least I hope cause Im taking mine tomorrow!)

 

[DentalFrog]

Thank you thank you thank you! Good luck on your test!

 

[quackwhacker]

also add i to the equations for osm pressure and fp elevation, i is the total number of ions dissoc (ex. NaCl--> Na Cl i=2)

 

[aquafoam]

Thanks for posting these formulas! I was just going through some orgo and gen chem today... 🙂 i see that you didn't include nuclear decay though -- thoughts?

 

[DemQ]

ph=pka +log A/HA
ph= given kb = 14-(kb x [A) ^1/2
G=delta H-T delta S
D=P x MM/ RT
P1 V1 / T1 = P2 V2/ T2
delta Tf= kf m (same for boiling)
os pressure=MRT
ksp of MX3 =27x^4 where x is the mol sol
ksp of MX2=4x^3
P1V1=P2V2
%yield= actual/ theoretical
spec heat formula heat=mass x specific heat x delta T
formal charge= group # - [1/2 # shared e + # unshared e]
C= 5/9 (F-32) K= C + 273
vapor pressure= mole fraction x vapor pressure pure solv
(gases) delta G= -RT ln keq
pka=-log ka
delta G = -nFEcell n=# electrons transferred and F=Faradays constant
Molarity=moles/ Lsol
molality=moles solute/ kg sol
limiting reagent=lower number of moles of reagent



This should cover most of the things you see on the DAT (at least I hope cause Im taking mine tomorrow!)

osmotic pressure, u forgot i, Van hoffs factor, its = iMRT