Constant ion-product

Ionic Equilibria.. The ion product constant of D2O (see Table 3) is an order of magnitude less than the value for H2O (24,31,32). The relationship pD = pH + 0.41 (molar scale 0.45 molal scale) for pD ia the range 2—9 as measured by a glass electrode standardized ia H2O has been established (33). For many phenomena strongly dependent on hydrogen ion activity, as is the case ia many biological contexts, the difference between pH and pD may have a large effect on the iaterpretation of experiments. 

These equations say that the Kh of an amine multiplied by the of the corresponding ammonium ion is equal to Kw, the ion-product constant for water (1.00 x 10 14). Thus, if we know Ka for an ammonium ion, we also know for the corresponding amine base because /stronger base has an ammonium ion with a larger p... 

K. See Equilibrium constant Ka. See Acid equilibrium constant See Base equilibrium constant Kc. See Equilibrium constant Kf. See Formation equilibrium constant Kr See Equilibrium constant K,p. See Solubility product constant K . See Water ion product constant K-electron capture The natural radioactive process in which an inner electron (n = 1) enters the nucleus, converting a proton to a neutron, 514 Kelvin, Lord, 8... 

Kw is also widely called the autoionization constant and sometimes the ion product constant of water. 

For some nonaqueous solvents, the autoionization, if it occurs at all, must be to a degree so small that virtually no ions are present. If the ion product constant for a solvent is as low as 10-40, the concentra-... 

For this equilibrium, the ion product constant has a value of approximately 2.7 X 1CP4. However, the discussion is complex and other species are present in sulfuric acid as a result of equilibria that can be written as... 

Km Kw Ki Ki e Michaelis constant (Chapter 10, k-Jki or equation 10.2-17) ion-product constant of water, equation 8.2-4 k-2lk2 (Chapter 10) k-ilki (Chapter 10) liquid (phase) length of unreacted zone (core) in SCM, m... 

Words that can be used as topics in essays acid-base indicator ion-product constant... 

So few ions form that the concentration of water is essentially constant. The product fclHaO] is equal to the product of the concentrations of hydronium ions and hydroxide ions. The equilibrium value of the concentration ion product [HaO HOH"] at 25°C is called the ion product constant for water. It is given the symbol K . 

Similarly, the concentration of hydroxide ions can he determined from the concentration of the dissolved base. If the solution is a strong base, you can ignore the dissociation of water molecules when determining [OH ], unless the solution is very dilute. When either [HsO ] or [OH ] is known, you can use the ion product constant for water,, to determine the concentration of the other ion. Although the value of i w for water is... 

In this problem, the ion product constant is a useful check ... 

In pure water, the concentrations of and OH must be equal because the dissociation of HjO yields the same number of each of them. You can calculate the ionic concentrations from the equilibrium equation and the ion-product constant ... 

At 25°C the concentrations of hydronium and hydroxide ions in water are both equal to 1.0 X 10 M. To put this concentration into perspective, consider that about two out of every billion water molecules dissociates into ions. The equilibrium constant for the above reaction is known as the ion product constant of water, symbolized by K, and is equal to the product of the H+ and OH molar concentrations ... 

Ion a charged species created when an atom or group of atoms gains or loses electrons Ion-Dipole Force intermolecular force between an ion and a dipole Ion Pair in a solution when a positive and negative ion exist as a single particle Ion Product Constant in an ionic reaction, the product of each ion s concentration in solution raised to a power equal to the coefficient in the net ionic equation, for water it equals [H+][OH ]... 

Note H+ exists in water as H3O+.) The product of these two concentrations is the ion-product constant for water, K ... 

The autoprotolysis constant (autoionization constant) of water, Kw = q(l l jO )q(OI1 ) ss [H30+][0H, is often called the ion product constant of water. The value of -logKw varies with temperature as in Table 3.2. In water, there exists the following relation between K l of an acid and Kb of its conjugate base ... 

Clever, H. L., The Ion Product Constant of Water Thermodynamics of Water Ionization. J. Chem. Educ., 1968 45, 231-235. 

---