The pKa of p-methylthiophenol (CH3SC6H4OH) is 9.53. Is p-methylthiophenol more or less reactive in electrophilic aromatic substitution than phenol? Explain why polycyclic aromatic compounds like naphthalene and anthracene are more reactive toward electrophilic aromatic...
It is a branch of natural science that examines the building blocks of matter, including the atoms, molecules, and ions that make up compounds and their composition, structure, behaviour, and changes that occur when they interact with other things. The quantum mechanical approach is currently used...
The weak acid hippuric acid is 5.0% ionized at pH 2.3. What is the pKa of the hippuric acid? Why is HF a weak acid, but HCl is a strong acid? Is HCl classified as a strong acid, strong base, weak acid, or weak base? The re...
By the pka table, HI is a stronger acid than RSH. So, RS- would still have the stronger base, that would still be more solvated. I really don’t get it. When I think I got it, I didn’t. I used to like Ochem a lot, but now I think I will never undestand it and it bums...
Zhang et al report the highly efficient pure blue electroluminescent (EL) device based on bis[(3,5-difluoro-4-cyanophenyl)pyridine]picolinate iridium(III) (FCNIrpic) doped 9-(4-tert-Butylphenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi) film. The matched energy levels of FCNIrpic and...
I’ve usedMarvin Sketchin the past and it’s plugins like pKa predictions. I see that they’ve now moved to a Cloud option as well with the Marvin Pro product. The MarvinSketch editing interface Strategies moving forward Don’t Panic. Let’s wait and see what, if any response is receiv...
As a very weak base with a pKa of 8.2, benzotriazole exhibits more acidity than indazole, benzimidazole, and 1,2,3-triazoles. Its stability is enhanced by the fused benzene ring, which contributes to the stability of the conjugate base. ...
What is the pH of 0.27 M methylammonium bromide, CH3NH3Br? (Kb of CH3NH2 = 4.4 x 10−4.) pH of a Solution: An acid-base pair conjugate is related by one being a proton donator and the other a proton acceptor. We can use this relationship by solving the concentration of ...
Answer to: A 100.0 mL of a buffer solution is prepared from 0.25 M CH_3NH_2 and enough HCl to adjust the pH of 10.50. What is the ratio of the By...
Because nitrogen is a representative element (it resides in thepblock of the periodic table), we can predict its molecular geometry and bond angles using valence-shell electron-pair repulsion (VSEPR) theory, which basically states that electron domains will orient themselve...