Which statement about pKa is not true? a) It represents a pH at which 50% of the titratable group is in the acid form and 50% is in the base form. b) If the pH is less than the pKa, more than 50% of the titratable groups are unprotonated. c) If the pH is ...
治疗流体的酸碱度和PEI nitrogens的pKa价值定义了多少易反应的主要和次要nitrogens在PEI依然是protonated和从而变得无法获得为交互相联反应与基本的聚合物。 相关内容 awe are visiting a show of ancient marbles 我们参观古老大理石展示 [translate] aEvaluate and supervise others work effectively and efficiently 评估...
To calculate the pH of a buffer solution when base is added, the Henderson-Hasselbalch equation, pH = pKa + log (acid/base), is used. The mol of base is added to the buffer's base, and the base's mol is subtracted from the buffer's acid. These new mols are used to find the ...
After 24 h of HS, hyperphosphorylation of p70S6K (Thr389) was accompanied by a sharp increase in the mRNA expression and protein abundance of E3-ubiquitin ligase MuRF1 [13] (Figure 3a). To find out whether these phenomena are related, rats were treated with rapamycin (...
Calculate the pH of a 1.51 mol/L solution of hydrofluoric acid. The pKa of HF is 3.17. Calculate the pH of a buffer solution that is 0.40 M in both HC2H3O2 and NaC2H3O2. Between benzoic acid and acetic acid, which is a stronger acid without looking to pKa value? Why ...
The values are measured at pH 7.4. c The data represent the limiting value for Em at pH << pK1, as described in [59]. d Vopt is the optimal reaction rate achieved when the first protonable group is deprotonated (pKA) and the second group is protonated (pKB), according to the follow...
the original acid and [A-] is its conjugate base. At the equivalence point, enough base has been added to completely neutralize the acid, so the at the half-equivalence point, the concentrations of acid and base are equal. Therefore log ([A-]/[HA]) = log 1 = 0, and pH = pKa. ...
Methanesulfonic acid, also known as CH3SO3H, is the simplest alkylsulfonic acid. It is a colorless liquid that is soluble in water and slightly soluble in organic solvents. With a strong acidity and a pKa of approximately -0.6, it does not undergo hydrolysis in hot water or alkaline solutions...
Haemoglobin has a pI of 6.8. Why would haemoglobin not move through the column in 0.01 M phosphate buffer solution of pH 6.3? Select all responses that are true. (Hint: there are 2 correct responses.) a) The protein is negatively-charged b) The protein ...
They are the enzymes that have a role in the regulation of any of the steps or complete processes of body metabolism. They are used generally as targets of drugs for curing the disease that is related to metabolisms like diabete...