Sodium bismuthate
Encyclopedia
Sodium bismuthate, also known as sodium
bismuth
oxide
, is a slightly hygroscopic chemical compound
with the chemical formula
of NaBiO3.
Sodium bismuthate is an oxidizer. It is not soluble in cold water
, but decomposes when placed in hot water.
It also decomposes when placed in acid
s. It is one of the few sodium compounds that do not dissolve in water.
Sodium bismuthate is commercially used in manganese testing.
Sodium
Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal and is a member of the alkali metals; its only stable isotope is 23Na. It is an abundant element that exists in numerous minerals, most commonly as sodium chloride...
bismuth
Bismuth
Bismuth is a chemical element with symbol Bi and atomic number 83. Bismuth, a trivalent poor metal, chemically resembles arsenic and antimony. Elemental bismuth may occur naturally uncombined, although its sulfide and oxide form important commercial ores. The free element is 86% as dense as lead...
oxide
Oxide
An oxide is a chemical compound that contains at least one oxygen atom in its chemical formula. Metal oxides typically contain an anion of oxygen in the oxidation state of −2....
, is a slightly hygroscopic chemical compound
Chemical compound
A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...
with the chemical formula
Chemical formula
A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound....
of NaBiO3.
Sodium bismuthate is an oxidizer. It is not soluble in cold water
Water
Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...
, but decomposes when placed in hot water.
- 4 NaBiO3 + 2 H2O → 4 NaOH + 2 Bi2O3 + 3 O2
It also decomposes when placed in acid
Acid
An acid is a substance which reacts with a base. Commonly, acids can be identified as tasting sour, reacting with metals such as calcium, and bases like sodium carbonate. Aqueous acids have a pH of less than 7, where an acid of lower pH is typically stronger, and turn blue litmus paper red...
s. It is one of the few sodium compounds that do not dissolve in water.
Sodium bismuthate is commercially used in manganese testing.