Potassium periodate
Encyclopedia
Potassium periodate has formula KIO4.
It is slightly soluble in water (one of the less soluble of potassium salts, owing to a large anion), giving rise to a solution that is slightly alkaline. On heating (especially with manganese(IV) oxide
as catalyst), it decomposes to form potassium iodate, releasing oxygen gas.
The low solubility of KIO4 makes it useful for the determination of potassium.
Note that the pronunciation is per-iodate, not period-ate.
It is slightly soluble in water (one of the less soluble of potassium salts, owing to a large anion), giving rise to a solution that is slightly alkaline. On heating (especially with manganese(IV) oxide
Manganese(IV) oxide
Manganese oxide is the inorganic compound with the formula . This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules. The principal use for MnO2 is for dry-cell batteries, such as the alkaline battery and the...
as catalyst), it decomposes to form potassium iodate, releasing oxygen gas.
The low solubility of KIO4 makes it useful for the determination of potassium.
Note that the pronunciation is per-iodate, not period-ate.