(The pKa of acetic acid is 4.76) Calculate the volume of 0.20 M NaOH required to bring the pH of 20 mL of 5% acetic acid solution to 4.74, which is the pKa of acetic acid. If acetic acid has a Pka of 4.74, what is the pH of a mixture where the concentration of acetic acid ...
I have tried 90:10 ethyl acetate:IPA for elution of a large drug panel in urine by SLE+. The combination gave good recovery of more hydrophilic analytes, but increased matrix effects for some compounds. So, what’s a method development chemist to do? Know the logP and pKa of your ...
A vital function of the immune system is to detect alterations in tissue homeostasis and respond in a context-dependent manner. To achieve this, immune and stromal cells, particularly those located at barrier sites, express a diverse range of germline-encoded receptors termed pattern recognition rece...
Labs play a significant role in AP Chemistry, and knowledge of experimental procedures is critical for the final exam. If you're an AP Chemistry student (or are considering becoming one), this guide will help you understand what to expect from the lab components of the course. I'll provide...
I need help with this problem: How many chiral centers does this compound have? (The answer should be 4) But I don`t understand how to find them. Can someone please show me which of the C-atoms that Explain why the C=C of an enol is more ...
Dilution is the process of lowering the concentration of given solution by adding specific diluent like water into the concentrated solution. Dilution Equation : {eq}C_1V_1 = C_2V_2 {/eq}Answer and Explanation: Become a Study.com member...
https://www.engvid.com/vocabulary-hack-compound-adjectives/ Many of our other teachers also have great vocabulary lessons. Just type “vocabulary” in the search bar of our site to find such lessons. All the best, Fazlullah! I’m sure you can do it! Rebecca thank you, excellent way to...
The presence of substituents influenced the electronic structure of the parent compound and its derivatives by inductive effects, but it also affected the geometry of the 2 and 3 groups, due to the intramolecular hydrogen bonding and the formation of a quasi-ring/rings. The static DFT models ...
Therefore, the results have shown that the antioxidant activity varies according to the selected method. There are few studies on the mechanism by which radical neutralization is carried out for this type of compound at an experimental and theoretical level [3]. To know the mechanism by which ...
Neurons are the building blocks of the nervous system and their impairment of their functions could result in neurodegenerative disorders. Accumulating evidence shows an increase of brain-affecting disorders, still today characterized by poor therapeutic options. There is a strong urgency to find new ...