Iodic acid
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| Iodic acid | |
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| General | |
| Other names | Iodic(V) acid |
| Molecular formula | HIO3 |
| Molar mass | 175.91 g/mol |
| Appearance | white solid |
| CAS number | [7782-68-5] |
| Properties | |
| Density and phase | 4.62 g/cm3, solid |
| Solubility in water | 269 g/100 ml (20 °C) |
| Melting point | 110 °C |
| Boiling point | ? °C (? K) |
| Acidity (pKa) | 0.75 |
| Structure | |
| Molecular shape | ? |
| Dipole moment | ? D |
| Hazards | |
| MSDS | External MSDS |
| EU classification | not listed |
| NFPA 704 | |
| Flash point | non flammable |
| Supplementary data page | |
| Structure and properties |
n, εr, etc. |
| Thermodynamic data |
Phase behaviour Solid, liquid, gas |
| Spectral data | UV, IR, NMR, MS |
| Related compounds | |
| Other anions | Hydriodic acid Periodic acid |
| Other cations | Potassium iodate |
| Related oxoacids | Chloric acid Bromic acid |
| Related compounds | Iodine pentoxide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Iodic acid, HIO3, can be obtained as a white solid. It is an isolable compound, unlike chloric acid or bromic acid.
Contents |
[edit] Preparation
Iodic acid can be produced by oxidizing I2 with chlorine in an aqueous solution
[edit] Properties
Iodic acid is a relatively strong acid with a pKa of 0.75. It is strongly oxidizing in acidic solution, less so in basic solution.
[edit] Uses
Iodic acid is used as a standard strong acid in analytical chemistry. It may be used to standardize solutions of both weak and strong bases, with methyl red or methyl orange as the indicator.
[edit] External links
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