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...
I hope all is well, I have a few questions regarding fluorescence spectral corrections. I have run into an issue with corrections on the instrument I'm using. I have obtained spectra for a few compounds where the correction was working properly and achieve the results as expected. When...
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:
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
(∂P/∂T)VbardT = - (∂P/∂Vbar)PdVbar
(∂P/∂T)P = - (∂P/∂T)vbar / (∂P/∂Vbar)T With a constraint of P being constant
Im pretty sure...
Compute the 2nd and 3rd Virial coefficients at 300K of Ar. Experimental parameters are mentioned in xlist and ylist below :)
My professor has given a hit, which is as follows: "Use the data to determine the (z) compressability (sp?) and plot Z as a...