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Iodic acid



Iodic acid
Other names Iodic(V) acid
Identifiers
CAS number 7782-68-5
Properties
Molecular formula HIO3
Molar mass 175.91 g/mol
Appearance white solid
Density 4.62 g/cm3, solid
Melting point

110 °C

Solubility in water 269 g/100 ml (20 °C)
Acidity (pKa) 0.75
Hazards
EU classification not listed
Flash point non flammable
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

Iodic acid, HIO3, can be obtained as a white solid. It is an insoluble compound, unlike chloric acid or bromic acid.

Additional recommended knowledge

Contents

Preparation

Iodic acid can be produced by oxidizing I2 with chlorine in an aqueous solution

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.

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.

References

     
    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Iodic_acid". A list of authors is available in Wikipedia.
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