In chemistry, an acid dissociation constant (also known as acidity constant, or acid-ionization constant; denoted K a {\displaystyle K_{a}} ) is a quantitative...

a dissociation constant (KD) is a specific type of equilibrium constant that measures the propensity of a larger object to separate (dissociate) reversibly...

acid ( H 2 SO 4 ) {\displaystyle {\ce {(H2SO4)}}} . A weak acid is only partially dissociated, with both the undissociated acid and its dissociation products...

accurately, degree of dissociation refers to the amount of solute dissociated into ions or radicals per mole. In case of very strong acids and bases, degree...

following two acid dissociation reactions HA ⇌ H+ + A−  Ka,A = [A−][H+]/[HA] BH+ ⇌ B + H+  Ka,B = [B][H+]/[BH+] with the dissociation constants Ka,A and Ka...

of a weak acid to the numerical value of the acid dissociation constant, Ka, of acid and the ratio of the concentrations, [ Base ] [ Acid ] {\displaystyle...

[Weak Acid] {\displaystyle {\ce {pH}}=-\log K_{a}+\log {\frac {\text{[Conjugate Base]}}{\text{[Weak Acid]}}}} where Ka is the acid dissociation constant. 3...

solution has been titrated into the oxalic acid solution. To calculate the logarithmic acid dissociation constant (pKa), one must find the volume at the half-equivalence...

<=> A- + H2PO4-}}} The equilibrium constant for this reaction can be derived from the acid dissociation constants of adenine and of the dihydrogen phosphate...

together. The carboxyl radical, •COOH, only exists briefly. The acid dissociation constant of •COOH has been measured using electron paramagnetic resonance...

and acid–base homeostasis in the human body. Stability constants, formation constants, binding constants, association constants and dissociation constants...

have an acidity 104 times that of triflic acid (pKaaq ~ –14), as measured by its acid dissociation constant. It was first prepared in 1987 by Seppelt...

negative decimal logarithm of", and is used in the term pKa for acid dissociation constants, so pH is "the negative decimal logarithm of H+ ion concentration"...

diprotic acid (here symbolized by H2A) can undergo one or two dissociations depending on the pH. Each dissociation has its own dissociation constant, Ka1...

(SO3:H2SO4, H0 = −14.5) Perchloric acid (HClO4, H0 = −13) Sulfuric acid (H2SO4, H0 = −11.9) Superbase Acid dissociation constant Hall NF, Conant JB (1927). "A...

of aqueous solutions, and to estimate the Ka values (acid dissociation constants) of weak acids and bases from titration data. Gran plots use linear approximations...

acid dissociation constant of bromous acid, Ka = [H+][BrO− 2]/[HBrO2], was determined using different methods. The value of the pKa for bromous acid was...

acid is normally considered to be a strong acid at ambient temperatures. There is some disagreement over the value of the acid dissociation constant,...

extracellular fluid. pKa H2CO3 is the cologarithm of the acid dissociation constant of carbonic acid. It is equal to 6.1. [HCO− 3] is the molar concentration...

on dilution or if an acid or base is added at constant temperature. Its pH changes very little when a small amount of strong acid or base is added to it...

and pKa for an acid dissociation constant, where the symbol p denotes a cologarithm. The logarithmic form of the equilibrium constant equation is pKw = pH + pOH...

aqueous pKaH (conjugate acid dissociation constant, a measure of basicity) is 11.07 at 25 °C, while its pKa (acid dissociation constant, a measure of acidity)...

thermochemical steps can be determined from parameters like acid dissociation constants (pKa) and standard redox potentials (ε°) that are measured in...

to measure the acid dissociation constants of carbon-containing molecules. Because DMSO accepts protons more strongly than H2O the acid becomes stronger...

and thus turning the acid into a phosphorus oxoanion. Each additional proton lost has an associated acid dissociation constant Ka1, Ka2 Ka3, ..., often...

indicator to be a simple acid, HA, which dissociates into H+ and A−. HA ⇌ H+ + A− The value of the acid dissociation constant, pKa, must be known. The...

causing hyperoxaluria. Glyoxylic acid is about ten times stronger an acid than acetic acid, with an acid dissociation constant of 4.7 × 10−4 (pKa = 3.32):...

highly exothermic, dilution. As indicated by its acid dissociation constant, sulfuric acid is a strong acid: H2SO4 → H3O+ + HSO−4 Ka1 = 1000 (pKa1 = −3) The...

may dissolve unchanged, with dissociation, or with chemical reaction with another constituent of the solution, such as acid or alkali. Each solubility equilibrium...

Professionally known as: Pen name Stage persona pKa, the symbol for the acid dissociation constant at logarithmic scale Protein kinase A, a class of cAMP-dependent...