Hypochlorous acid
| Hypochlorous acid | |
|---|---|
| IUPAC name | Hypochlorous acid[note 1] |
| Other names | Chloric(I) acid Chloranol Hydroxidochlorine |
| Identifiers | |
| InChI | InChI=1/ClHO/c1-2/h2H |
| InChIKey | QWPPOHNGKGFGJK-UHFFFAOYAT |
| Standard InChI | InChI=1S/ClHO/c1-2/h2H |
| Standard InChIKey | QWPPOHNGKGFGJK-UHFFFAOYSA-N |
| CAS number | [] |
| EC number | |
| ChemSpider | |
| Properties[2] | |
| Chemical formula | HOCl |
| Molar mass | 52.460 g mol−1 |
| Acidity (pKa) | 7.47 |
| Structure[3] | |
| Molecular geometry | bent: r(Cl–O) = 168.90 pm, θ(Cl–O–H) = 102.97° |
| Thermochemistry[4] | |
| Std enthalpy of formation ΔfH |
−74.48 kJ mol−1 (gas) |
| Standard molar entropy S |
236.50 J K−1 mol−1 (gas) |
| Related compounds | |
| Other hypohalous acids | Hypofluorous acid Hypobromous acid Hypoiodous acid |
| Other compounds | Hydrochloric acid Chlorous acid Chloric acid Perchloric acid |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Hypochlorous acid, HOCl, is an oxoacid of chlorine. It is often considered to be only stable in aqueous solution,[2][5] but it can be prepared in sufficient quantities in the gas phase for spectroscopic and even thermodynamic studies.[3][4]
Contents
Preparation
Structure
Reactivity
Notes and references
Notes
- ↑ Hypochlorous acid is a retained name in IUPAC nomenclature.[1]
References
- ↑ Nomenclature of Inorganic Chemistry; IUPAC Recommendations 2005; Royal Society of Chemistry: Cambridge, 2005; p 294. ISBN 0-85404-438-8, <http://www.iupac.org/publications/books/rbook/Red_Book_2005.pdf>.
- ↑ 2.0 2.1 Cotton, F. Albert; Wilkinson, Geoffrey Advanced Inorganic Chemistry, 5th ed.; Wiley-Interscience: New York, 1988; pp 563–67. ISBN 0-471-84997-9.
- ↑ 3.0 3.1 Escribano, R. M.; Di Lonardo, G.; Fusina, L. Empirical anharmonic force field and equilibrium structure of hypochlorous acid, HOCl. Chem. Phys. Lett. 1996, 259 (5–6), 614–18. DOI: 10.1016/0009-2614(96)00774-9.
- ↑ 4.0 4.1 Hypochlorous acid. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/ClHO/c1-2/h2H>. (accessed 1 January 2011).
- ↑ Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; pp 999–1007. ISBN 0-08-022057-6.
External links
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See also the corresponding article on Wikipedia. |
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