What hydrogen atoms in the given compound have a pKa less than or equal to 25? The pKa of acetamide (CH3CONH2) is 16. Draw the structure of its conjugate base and explain why acetamide is less acidic than CH3COOH. The higher the degree of ionization, the ___ the acid and the _...
The phosphorylation of synaptic proteins is a significant biochemical reaction that controls the sleep–wake cycle in mammals1–3. Protein phosphorylation in vivo is reversibly regulated by kinases and phosphatases. In this study, we investigate a pair o
Easy Derivation of pH Is Approximately Equal To (pKa1 + pKa2) / 2 Using Autoprotolysis of HA-: Doubtful Value of the Supposedly More Rigorous Equation Easy Derivation of pH Is Approximately Equal To (pKa1 + pKa2) / 2 Using Autoprotolysis of HA-: Doubtful Value of the Supposedly More...
The objective is to maintain pH = 7.0 for an enzyme-catalyzed reaction that will produce hydrogen ions along with the desired product. At equal concentrations, which weak acid, if any, will serve as the better buffer for the reaction: ...
Belonging to the RSH-GGA class of functionals [9], CAM-B3LYP exploits different parameters to describe long- or short-range interactions. In the long-range interaction, a Hartree–Fock contribution equal to 19% is utilized, while in the short one, it amounts to 65%. In both cases, the ...
The logarithmic expression for RGR is equal to the natural logarithm of the ratio between the total of the organism's initial size (M) and the increment in size (M) during time interval t, divided by the initial size (M). The comparison of non-independent variables, for example, (X +...
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The amount borrowed will need to be $500,000 ÷ (1 ? .16), or $595,238. Interest on $595,238 at 9.5% for one year will be $56,548. $56,548 ÷ $500,000 is also equal to 11.31%. So either calculation will result in the correct answer.This is the average of the 9.5% ...
This shows that pKa and pH are equal when half of the acid has dissociated. The buffering capacity of a species or its ability to maintain pH of a solution is highest when the pKa and pH values are close. So, when selecting abuffer, the best choice is the one that has a pKa value...
Ammonium cation (NH4+) has a pKa of about 9.3. What is true of this compound when the pH is equal to 9.3? a. None of the molecules have a charge b. It is deprotonated and negatively charged c. It is p Which of the following substances is the weakest acid? a. boric acid, H3BO3...