Hello,
I have having some difficulty determining the conformer and assigning H-NMR peaks for a compound with a N,N-diisopropylacetamidine (R-NH-C(CH3)N(2[CH[2(CH3)]])... essentially a diisopropylamine added to CH3CN (ACN). my H-NMR spectrum (at room temp) in CD3CN consists of:
I have assigned...
Hello,
I have been measuring quantum yields in the lab for quite some time and have occasionally been running into some difficulty with my fluorescence spectra. The intensity (CPS) of the spectra for the same molecule will remain the same under the same conditions most of the time; then, every...
Not to bad for my last semester:
Inorganic Chemistry
Physical Chemistry I
Organic Chemistry Research Seminar
djh101, Pchem lab is awful, especially the Quantum Mech. labs as they are mostly theoretical.
epenguin, I fit 7 terms because it was such a good fit I couldn't resist keeping it fit to the 8th coefficient. If I reduce the fit eqn to z = 1 + B/Vbar + C/(Vbar^2) then B and C would be the 2nd and 3rd coefficients correct? Then I use those to calculate Z?
Thanks for the response...I realize...
I think it has to do with 2nd derivatives...
in continuation from where i left of last time:
(∂P/∂Vbar)T = -RT/Vbar2
(∂2P/∂Vbar2)T = 2RT/Vbar3
(∂P/∂T)Vbar = R/Vbar
(∂2P/∂T2)Vbar = O
((∂/∂T)(∂P/∂T)T)Vbar = -R/Vbar2
((∂/∂Vbar)(∂P/∂T)Vbar)T = -R/Vbar2
Since those last 2 mixed...
Total differential ->
dP = (∂P/∂T)n,VdT + (∂P/∂V)n,TdV + (∂P/∂n)T,Vdn
What if P is Constant?
0 = (∂P/∂T)VbardT + (∂P/∂Vbar)TdVbar
so...
(∂P/∂T)VbardT = - (∂P/∂Vbar)PdVbar
(∂P/∂T)P = - (∂P/∂T)vbar / (∂P/∂Vbar)T With a constraint of P being constant
Cyclic Rule
Im pretty sure...
Homework Statement
Compute the 2nd and 3rd Virial coefficients at 300K of Ar. Experimental parameters are mentioned in xlist and ylist below :)
Homework Equations
My professor has given a hit, which is as follows: "Use the data to determine the (z) compressability (sp?) and plot Z as a...