Problem: Phenylacetic acid (C6H5CH2COOH simplified here to HPAc) builds up in the blood of persons with phenylketonuria, an inherited disorder that, if untreated, causes mental retardation and death. A study of the acid shows that pH of 0.12M HPAc is 2.62. What is the Ka of phenylacetic...
Using the "ICE table", we can assume x mol/L of [C6H5COO-] and x mol/L [H3O+] dissociate, leaving 0.050-x M of [C6H5COOH] Thus Ka = 6.31e-05 = x2/(0.050-x) Here we make an assumption that due to C6H5COOH being a weak acid, only a miniscule amt dissociates, meaning x ...
Compare the pH of NaC2H3O2 and KC2H3O2, Justify your finding. Salts: When salts dissolve in water, they can create equilibria within the solution. This is due to the ions that form the salt. If the cation is part of a weak base or the anion part of a weak acid, they will rea...
A portion of oil or fat is mixed with an organic solvent containing a weak base in 10-30-fold excess, was measured by pH. standard was added and the pH re-measured is set difference between the measured pH values. According to the formula is determined by acid number. As the organic ...
Organic Electrochemical Transistors are versatile sensors that became essential for the field of organic bioelectronics. However, despite their importance, an incomplete understanding of their working mechanism is currently precluding a targeted design o
“This is a great product, but my toddler does not like it and refuses to drink, even with modifications to the flavor.”– Reviewer on Else Nutrition’s website. Neocate Infant DHA/ARA (Hypoallergenic) Best Features & Safety It’s an amino acid-based formula. It has added ...
A key experiment is to study conditions where the electrostatic effects are very weak, such as at high salinity or at a pH value where the surface or the polyelectrolyte is completely uncharged. In this way the role of the non-electrostatic interactions can really be understood. Overcharging ...
Within the uncertainties of involved astronomical and biological parameters, the Drake Equation typically predicts that there should be many exoplanets in our galaxy hosting active, communicative civilizations (ACCs). These optimistic calculations are ho
A high fever Severe cough with mucus Pneumonia can be life-threatening, especially in children two and under, adults over 65, people with a weak immune system, and people in poor health.11 COVID-19 Tightness in the chest can also be a symptom of COVID-19. You might also have other sy...
Standards should be prepared from stock solutions (typically 1000 mg/L) which contain about 1% v/v of an appropriate acid. Since many standards for flame AA can be of very low concentration (possibly less than 1 mg/L) it will be necessary to add extra acid to ensure that the pH ...