Acid periodic

Acid periodic
Model 3D al moleculei
Model 3D al moleculei
Denumiri
Identificare
SMILES
Număr CAS10450-60-9
PubChem CID25289
Informații generale
Formulă chimicăHIO4
Aspectcristale incolore
Masă molară227,9406 g/mol
Punct de topire122 °C, 395 K, 252 °F

Sunt folosite unitățile SI și condițiile de temperatură și presiune normale dacă nu s-a specificat altfel.
Modifică date / text Consultați documentația formatului

Acidul periodic este un acid anorganic tare al iodului cu formula chimică HIO4. Sărurile acestui acid se numesc periodați. Denumirea sa nu provine de la perioadă, ci de la iod (similar cu acid percloric). Există două tipuri: acidul în sine, metaperiodic și acidul ortoperiodic H5IO6.

Într-o soluție diluată, acidul periodic există sub forma ionilor H+ și IO4−. Dacă se concentrează prea mult soluția, se obține acidul ortoperiodic. Acesta se mai poate obține și sub formă cristalină. Acidul ortoperiodic poate fi deshidratat, devenind acid metaperiodic. Încălzirea excesivă poate duce la formarea pentaoxidului de iod, I2O5 și a oxigenului.

Poate oxida diolii vicinali.

Note

  1. ^ „Acid periodic”, 10450-60-9 (în engleză), PubChem, accesat în  

Bibliografie

  • Constantin D. Albu, Maria Brezeanu, Mică enciclopedie de chimie, Editura Enciclopedică Română, 1974, p. 22
  • Costin Nenițescu, Chimie Organică, ediția a VIII-a, volumul I, Editura Didactică și Pedagogică, București, 1980
 Acest articol despre un acid este un ciot. Puteți ajuta Wikipedia prin completarea lui.


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