In 1909, Danish biochemist Søren Peter Lauritz Sørense proposed the following equation forcalculating pH: pH = -log[H+] where log is the base-10 logarithm and [H+] stands for the hydrogen ion concentration in units of moles per liter solution. The term "pH" comes from the German w...
16.4: Calculating pH Changes in a Buffer Solution 插入 添加到播放列表 成績單 16.3: 亨德森-哈塞尔巴尔赫方程(Henderson-Hasselbalch Equation) 弱酸的溶液的电离常数表达式可以写为: 重新安排以解决 [H3O+] 的产量: 使用该方程两侧的负对数 给出 可作为写入 ...
Henderson-Hasselbalch equation a formula for calculating the pH of a buffer solution such as blood plasma, pH = pKa + log [BA/HA]; [HA] is the concentration of a free weak acid; [BA] the concentration of the ionized form of this acid; pKa the acid dissociation constant, a measure of...
The ionization-constant expression for a solution of a weak acid can be written as:Rearranging to solve for [H3O+] yields:Taking the negative logarithm of both sides of this equation giveswhich can be written aswhere pKa is the negative of the logarithm
The -5 exponent gives a range to which the pH can be represented. The range for the pH would be between 4 and 5. This may not give an exact calculation for pH. but it does inform the individual whether they are inspecting an acid or a base. Finally, the pH can be found without...
Henderson-Hasselbalch equationa formula for calculating the pH of a buffer solution such as blood plasma, pH = pKa+ log [BA/HA]; [HA] is the concentration of a free weak acid; [BA] the concentration of the ionized form of this acid; pKathe acid dissociation constant, a measure of the...
What equation is used for calculating the pH of an acid buffer? To calculate the pH of an acid buffer, the Henderson-Hasselbalch equation is used, which is pH = pKa + log(acid/base). The acid's concentration is on top of the fraction, and the conjugate base's is on the bottom. Wh...
The Scatchard equation is an equation for calculating the affinity constant of a ligand with a protein. The Scatchard equation is given by frac{r}{c} = nK_a - rK_a where r is the ratio of the concentration of bound ligand to total available binding sites, c is the concentration of ...
(1966) Suitable indicators and an altered empirical equation for calculating the CO2-concentration in colorimetric determinations of photosynthetic rate. Biol. Plant 8: pp. 60-72Catsky, J ., and S. Zedenek. 1966. Suitable indicators and an altered empirical equation for calculating the CO2 ...
A better approach for calculating these parameters is to determine energies of activation from kinetic studies (see Chapter 7). Some investigators have also employed a two-site or two-surface Langmuir equation to describe sorption data for an adsorbent with two sites of different affinities. This ...