Potassium tetraphenylborate
Encyclopedia
Potassium tetraphenylborate (IUPAC name: Potassium tetraphenylboranuide) (KBC24H20 or KBPh
4) is a water-insoluble salt of potassium
(1.8×10-4 g/L). It is, however, soluble in organic solvents.
The insolubility of this compound has been used to determine the concentration of potassium ions by precipitation
and gravimetric analysis
:
Phenyl group
In organic chemistry, the phenyl group or phenyl ring is a cyclic group of atoms with the formula C6H5. Phenyl groups are closely related to benzene. Phenyl groups have six carbon atoms bonded together in a hexagonal planar ring, five of which are bonded to individual hydrogen atoms, with the...
4) is a water-insoluble salt of potassium
Potassium
Potassium is the chemical element with the symbol K and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction.Potassium and sodium are...
(1.8×10-4 g/L). It is, however, soluble in organic solvents.
The insolubility of this compound has been used to determine the concentration of potassium ions by precipitation
Precipitation (chemistry)
Precipitation is the formation of a solid in a solution or inside anothersolid during a chemical reaction or by diffusion in a solid. When the reaction occurs in a liquid, the solid formed is called the precipitate, or when compacted by a centrifuge, a pellet. The liquid remaining above the solid...
and gravimetric analysis
Gravimetric analysis
Gravimetric analysis describes a set of methods in analytical chemistry for the quantitative determination of an analyte based on the mass of a solid...
:
- K+ (aq) + B(Ph)4− (aq) → KB(Ph)4 (s)