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Metformin is an ‘insulin sensitizer’ which is different from using injectable insulin or other type 2 diabetes medications that work by increasing the body’s insulin production, adds Ashita ...
Metformin has acid dissociation constant values (pK a) of 2.8 and 11.5, so it exists very largely as the hydrophilic cationic species at physiological pH values. The metformin pK a values make it a stronger base than most other basic medications with less than 0.01% nonionized in blood.
At half-neutralization the ratio [A −] / [HA] = 1; since log(1) = 0, the pH at half-neutralization is numerically equal to pK a. Conversely, when pH = pK a, the concentration of HA is equal to the concentration of A −. The buffer region extends over the approximate range pK a ± 2. Buffering is weak outside the range pK a ± 1.
A weak acid may be defined as an acid with pK a greater than about −2. An acid with pK a = −2 would be 99 % dissociated at pH 0, that is, in a 1 M HCl solution. Any acid with a pK a less than about −2 is said to be a strong acid. Strong acids are said to be fully dissociated.
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Pourbaix diagram of iron. [1] The Y axis corresponds to voltage potential. In electrochemistry, and more generally in solution chemistry, a Pourbaix diagram, also known as a potential/pH diagram, E H –pH diagram or a pE/pH diagram, is a plot of possible thermodynamically stable phases (i.e., at chemical equilibrium) of an aqueous electrochemical system.
Additionally, a change in pH could cause micelles to swap their inner and outer molecules depending on the properties of the polymers involved. [1] Diagram of a micelle, showing how in aqueous solution the hydrophilic parts of the molecules would be on the outside and the hydrophobic parts would be on the inside of the sphere.
Whether you’re taking metformin for weight loss, type 2 diabetes, prediabetes, polycystic ovary syndrome (PCOS), or another medical condition entirely, you want to get the most out of your ...