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Questions tagged [physical-organic-chemistry]

For questions about how organic molecules and reactions are investigated using physical experiments.

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Concentrations on Facial cream [on hold]

Does the concentration of each ingredient in the facial cream affects the effectiveness of the facial cream? why and how?
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0answers
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Why do identical protons not couple with each other in 1H NMR? [duplicate]

So basically I'm wondering why the different protons in ...let's say trans-stilbene do not couple with each other. I'm aware of the fact that they are chemically and magnetically equivalent. They ...
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what is the difference between atomic mass, relative atomic mass and average atomic mass? [duplicate]

i want to clarify my concepts: 1.can we say that atomic mass is in fact isotopic mass but in amu ( i mean mass of one isotope e.g protium)? 2.Is atomic mass is always in whole numbers(e.g atomic ...
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1answer
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which one is the correct statement of “Law of definite proportion”? [closed]

according to my genius Teacher ' this law state that "the composition of a compound in terms of atoms (Not Mass) remains constant". His Proof: H2O and D2O are similar compounds (because H and D have ...
39
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6answers
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Why does wood burn but not sugar?

Fundamentally, they're both carbohydrates, although the cellulose in wood is essentially polymerized glucose, which combined with its isomer fructose forms sucrose. So why does wood readily burn ...
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0answers
75 views

Number of configurations/states for electrons in orbitals

I'm performing complete active space calculations for the prediction of X-ray absorption L edge spectra. This involves an excitation from 2p orbitals to the 3d orbitals of the metal. For the ...
6
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2answers
518 views

How can isotope labelling be used to determine the mechanism of ether cleavage with hydrogen iodide?

When methyl tert-butyl ether (MTBE) is treated with one equivalent of hydrogen iodide, the ether C–O bond is cleaved. I read that if the oxygen in MTBE is isotopically labelled, it is possible to ...