Questions tagged [experimental-chemistry]
This tag should be applied to questions relating to the theory, design, techniques or performance of chemical experiments. This includes but is not limited to theoretical structures, expected products, thermal calculations, and empirical analysis. Additional tags should be applied to narrow down the field of research.
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Percentage Yield
For the above MCQ question, I took the equation to be
$$\ce{CaC2 + 2H2O -> C2H2 + Ca(OH)2}$$
I then calculated the moles of $\ce{CaC2}$ as 0.7273 moles, which has a 1:1 molar ratio to $\ce{C2H2}$, ...
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How does a conc. electrolyte solution extract water from a organic phase like diethyl ether or ethyl acetate?
In organic chemistry, often, during the last steps of a workup we use concentrated brine solution (NaCl) to "extract" the water from the organic layer, especially when we have an organic ...
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Is nitroglycerin synthesis within human digestive system from eating soap possible?
Could you make nitroglycerin by eating large quantities of pure glycerine soap? A quick google search told me flatus are 59% nitrogen, but I couldn't find anyone else with my exact question (which ...
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Measuring Variables within the Hypothesis
I am performing an investigation on extraction of organic solutes, for example caffeine. With this extraction method, I want to find out whether the organic solvents used actually have an effect, or ...
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If bromomethyl cyclopentane reacts with Alcoholic KOH with Heat. Can this produce some very minor products through E1 mechanism also?
I know that alcoholic KOH with heat will majorly give E2 mechanism products but I want to know if it is possible to get minor products through E1 mechanism here also.
The carbocation generated here ...
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Is it possible to create your own flask/glassware? Has anyone done it recently?
There are alot of flasks/glassware out there, which serve different purposes. Whether thats the Erlenmeyer flask used in titration, invented by Emil Erlenmeyer; or the Schlenk flask used in air-...
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Does a steel pestle corrode while pressing soot?
While experimenting with a few different powders, I noticed the resulting small flakes were ferromagnetic. Then I decided to find out what was the cause: after repeating the experiment with only soot, ...
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Atomization and excitation in AES
AES (atomic emission spectroscopy) is often mentioned as both quantitative and qualitative analyzing method. From this site Atomic Emission Spectroscopy the sources such as flame and ICP are used. ...
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TLC experiment interprentation
I am having difficulty interpreting the results of an identification test involving six different standards (dyes) in an unknown mixture of dyes, using silica gel TLC plates and acetone as the mobile ...
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Synthesizing Cyclotetrazane from Hydrazine and Diazene?
Could cyclotetrazane — a compound with nitrogen atoms arranged in a square configuration — be synthesized? A hydrogen atom would be bonded to each vertex (nitrogen atom):
Could cyclotetrazane be made ...
user145192
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Minimum volume of benzene with percentage yield
The overall yield for the synthesis of N-phenylethanamide from benzene was found to be $35.2\%$.
Calculate the minimum volume of benzene, in $\mathrm{cm}^3$, required to make $10.0\, \mathrm{g}$ of N-...
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Can uncertainty be higher after averaging?
I remember my chemistry teacher said something about how the uncertainty for the average value shouldn't exceed the uncertainty of the uncertainty for the individual values because the reason why we ...
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Need help with synthesis of iron (II,III) oxide (Fe₃O₄) nanoparticles
I am attempting to synthesize iron (II,III) oxide nanoparticles (Fe3O4). I have some iron acetate and have seen some literature where people have synthesized Cu nanoparticles using a polyol process. ...
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Does the side of filter paper matter?
A question has bothered me for quite a long time.
I noticed some filter papers have a smooth side and a rough side. Does it matter (in theory) if I use the smooth side or the rough side for gravity ...
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Effect of particle size on yield of copper acetylide
To avoid pure trial and error, I need some examples of experiments already done with (possibly ammoniacal) aqueous solutions, particles/precipitates of copper (both oxidation states) salts, and ...
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