Very confused about Naunyn definition of acid and base
PhysicsForums » Chemistry
by red65
1w ago
First so that you can have some background I'd like to share an excerpt from the online lecture I'm studying. Here's a sample: "1880-Arrhenius defines an acid as a substance that , when dissolved in water, produces an increased concentration of hydrogen ions. 1900-Naunyn combines Arrhenius'... Read more ..read more
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Ideas for a project in computational chemistry?
PhysicsForums » Chemistry
by yenK
1w ago
Hi all, I'm having a course on computational chemistry, as part of a bachelor curriculum. We have a project that is due to 4 weeks and I'm failing to find an interesting idea for this project that has to be done using Python. It can be anything, as long as it involves chemistry and coding... Read more ..read more
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What is the Role of Energy in Quantum Hybridized Orbitals?
PhysicsForums » Chemistry
by Salamon
3w ago
Hello, I have a few questions about these images that I shared. 1) What does t represent? I am assuming Es is the energy of the atoms before they hybridize, and that t is either the gain or reduction of energy due to the new orbitals that are formed through bonding... Read more ..read more
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Does G10 Material in Pocket Knives Pose a Cancer Risk?
PhysicsForums » Chemistry
by yungman
3w ago
I have been looking at pocket knives, seems like all the ones with G10 handle scales have a warning about cancer. This is a very typical pocket knife. https://www.chicagoknifeworks.com/steel-will-cutjack-c22m-linerlock-od/ You see the cancer warning message? The rest of the knife is... Read more ..read more
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Does Resonance Occur in Nitrobenzene Despite Having One Pi Bond?
PhysicsForums » Chemistry
by this_is_harsh
3w ago
"My teacher had mentioned that resonance would occur here due to the presence of a positive charge if benzene is attached. However, if we consider two bonds without breaking them, there will be one pi bond. So, will there be no resonance due to it ..read more
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How to think about extensive and intensive properties?
PhysicsForums » Chemistry
by tellmesomething
1M ago
https://www.physicsforums.com/threads/confusion-over-intensive-properties-thermo.585648/post-3809940 Can someone explain this explanation given by Rap. Its an old thread so i cannot comment and ask him directly that is if he's still around ..read more
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Zirconium Versus Zirconium Carbide For Use With Galinstan
PhysicsForums » Chemistry
by evansste
1M ago
I'm planning on working with galinstan, for one of my projects. I need a conductor that can be immersed in the galinstan, indefinitely, without being corroded. I've learned that zirconium carbide has excellent chemical resistance, when it comes to galinstan. However, no one seems to sell it... Read more ..read more
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Can every atom be transformed into a noble gas?
PhysicsForums » Chemistry
by CGandC
1M ago
'noble gas' is defined as an atom with its valence shell completely filled to its capacity with electrons. Assuming I take an arbitrary atom ( with its valence shell not necessarily completely filled yet ) and assuming I am either adding electrons to it or removing electrons from... Read more ..read more
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Separation of KCl from potassium chromium(III) PDTA
PhysicsForums » Chemistry
by Mayhem
2M ago
The mentioned coordination complex has been prepared where KCl is a significant byproduct. The salt and the complex appear to be readily soluble in the same solvents. Despite the organic ligand (PDTA), it is not soluble in polar organic solvents, at least to a degree where it can be used for... Read more ..read more
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Debunking the Hypervalence Theory: The Truth About Bonds in HClO4
PhysicsForums » Chemistry
by Antozoa
2M ago
In HClO4 Cl forms one single bond with an oxygen and three dative bonds with the other 3 oxygen atoms. However, according to VB theory, Cl is hybridized and forms double bonds instead of dative bonds. Then, the structural formula of the molecule never shows arrows as it would if there were... Read more ..read more
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