Iodite (Redirected from Iodous acid)
Names | |
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IUPAC name
iodite
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Systematic IUPAC name
dioxidoiodate(1−) | |
Identifiers | |
3D model (JSmol)
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ChemSpider | |
PubChem CID
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Properties | |
IO− 2 | |
Molar mass | 58.90 g/mol |
Conjugate acid | Iodous acid |
Related compounds | |
Other anions
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Chlorite Bromite |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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The iodite ion, or iodine dioxide anion, is the halite with the chemical formula IO−
2. Within the ion the Iodine exists in the oxidation state of +3.
Iodite anion
Iodites (including iodous acid) are highly unstable and have been observed but never isolated. They will rapidly disproportionate to molecular Iodine and Iodates. However, they have been detected as intermediates in the conversion between iodide and iodate.
Iodous acid
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Names | |||
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IUPAC name
iodous acid
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Identifiers | |||
3D model (JSmol)
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Properties | |||
HIO2 | |||
Molar mass | 159.91 g/mol | ||
Conjugate base | Iodite | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Iodous acid is acid form of the iodite ion, with the formula HIO2.
Other oxyanions
Iodine can assume oxidation states of −1, +1, +3, +5, or +7. A number of neutral iodine oxides are also known.
Iodine oxidation state | −1 | +1 | +3 | +5 | +7 |
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Name | Iodide | Hypoiodite | Iodite | Iodate | periodate |
Formula | I− | IO− | IO− 2 |
IO− 3 |
IO− 4 or IO5− 6 |