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Arsenous acid, ,also known as arsenious acid, is the hydrolyzed form of arsenic trioxide and has the formula As(OH)3. As(OH)3 occurs in aqueous a solution and has not been isolated as a pure material, although this fact does not detract from the significance of As(OH)3. R-phrases , , , S-phrases , , , Supplementary data page Structure and properties n, εr, etc. ...
Dissolving table salt in water In chemistry, a solution is a homogeneous mixture composed of one or more substances known as solutes that are dissolved in another substance known as a solvent. ...
Properties
The molecular weight of arsenous acid, is 125.94g/mol. As(OH)3 is a pyramidal molecule consisting of three hydroxyl groups connected by single bonds to arsenic. The 1H NMR spectrum of arsenous acid solutions consists of a single signal consistent with the molecule's high symmetry. In contrast, the nominally related phosphorus species H3PO3 mainly adopts the structure HP(OH)2; P(OH)3 is a very minor equilibrium component of such solutions. The differing behaviors of the As and P compounds reflects a trend whereby high oxidation states are more stable for lighter members of main group elements than their heavier congeners. The molecular mass of a substance (less accurately called molecular weight and abbreviated as MW) is the mass of one molecule of that substance, relative to the unified atomic mass unit u (equal to 1/12 the mass of one atom of carbon-12). ...
Hydroxide is a polyatomic ion consisting of oxygen and hydrogen: OH− It has a charge of −1. ...
NMR may refer to: Nuclear magnetic resonance, a phenomenon involving the interaction of atomic nuclei and external magnetic fields Nielsen Media Research, a U.S. company which measures TV, radio and newspaper audiences This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the...
As(OH)3 is a weak acid with a pKa of 9.2. A weak acid is an acid that does not fully ionize in solution; that is, if the acid was represented by the general formula HA, then in aqueous solution a significant amount of undissolved HA still remains. ...
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Structure of Arsenous Acid
Reactions The preparation of As(OH)3 involves a slow hydrolysis of arsenic trioxide in water. Addition of base converts arsenous acid to the arsenite ions [AsO(OH)2]-, [AsO2(OH)]-2, and [AsO3]-3. Reactions attributed to aqueous arsenic trioxide are due to arsenous acid and its conjugate bases. Hydrolysis is a chemical process in which a molecule is split into two parts by the addition of a molecule of water. ...
R-phrases , , , S-phrases , , , Supplementary data page Structure and properties n, εr, etc. ...
A base is: in mathematics: A number that is raised to a power, or base of an exponential function. ...
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R-phrases , , , S-phrases , , , Supplementary data page Structure and properties n, εr, etc. ...
Toxicology Arsenic containing compounds are highly toxic and carcinogenic. The anhydride form of arsenous acid, arsenic trioxide, is used as a herbicide, pesticide, and rodenticide. In pathology, a carcinogen is any substance or agent that promotes cancer. ...
In chemistry, an anhydride is a compound that can be considered as derived from another compound by subtracting the atoms of water. ...
R-phrases , , , S-phrases , , , Supplementary data page Structure and properties n, εr, etc. ...
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References - Greenwood, N.N.; A. Earnshaw (1997). Chemistry of the Elements, Oxford: Butterworth-Heinemann.
- King, R. Bruce "(ed.)" (1994). Encyclopedia of Inorganic Chemistry, Chirchester: John Wiley & Sons.
- Patnaik, Pradyot (2003). Handbook of Inorganic Chemicals, New York: McGraw Hill.
January 29 is the 29th day of the year in the Gregorian calendar. ...
2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...
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