1) How does the alcohol get from the outer chamber to the inner?How can this pro
ID: 686439 • Letter: 1
Question
1) How does the alcohol get from the outer chamber to the inner?How can this process be hastened? (2 ways)?2) What is the purpose fo the different chemical additions to theouter chamber?
3) What reactions take place in the inner chamber?
4) What is the advantage(s) and disadvantage(s) of photometry tomeasure the ethanol?
5) What about the titration method?
6) What is meant by deviations from Beer's Law?
7) What do you do if you have deviations from Beer's Law at highconcentrations? Low concentrations?
8) How will your calibration curve compare to that in Kaye'sarticle? Is there a difference? Is there an advantage to plottingone of the ways? What is it?
9) What is the probable reason Kaye plotted %Transmittance for hiscurve?
10) What if you were doing gastric contents and performed theanalysis, obtained results and then found by Quantitative GC thateither methanol or isopropanol were present but not ethanol? Allthe sample is gone. What could you do?
11) Same scenario as above BUT you find by GC that there is amixture of 2 or 3 of the alcohols above? The sample is notcompletely gone. What do you do?
12) Which would be more accurate titration of photometry?
13) Is the separation and analysis specific for Ethanol? See #10and #11 above.
14) Can you make this micro-diffusion analysis more specificwithout going to another technique? Think about chemistry
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Explanation / Answer
1)diffusion 2)to produce repeatable results. 3)redox reaction with alcohol 4)photometry is the measurement of light. this is more accurate but may not be the same all the time 5)titration is a technique used to determine the unknown of a cocentration. it is more reproducable but not entirely accurate 6)this is when a non linear relationship no longer exisit. this may also means that under certain circumstance there are limitations to the law. 7)for high conentrations this is when molcules can act as a screen for other molucles as such they cannot be detected through spectroscopy. due to high concentrations moecules can use a change distribution with neighbouring species which results in a direct shift in the spectrum. the has the opposite effect for low concentrations. to account for high concentration one should do dilution and for low concentrions do not work in rangers lower than 10Mn also use thicker cells. 8) ths article states the log scale on the y axis but u use abs on the y axis 9) probable cause would be T=log however, Transmittance (T) = percent T / 100 ----> A = log (1/T) -----> %T = 100(10^-A) 10)forget it, you cant do anything 11)compare retention times, start the experiment again 12)photometry is more accurate 13)no, there is a possability of same reteintion time but you use gcms for a confrirmation 14)si, +oh,+temp, +inorganic nacl use gc
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