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Pemiobates

When the salt is allowed to remain in solution for some time it slowly precipitates another potassium pemiobate, the composition of which closely approximates to the formula KNb04. H20. [Pg.168]

Potassium Pemiobate, K3Nb08s is prepared by the action of caustic potash and 3 per cent, hydrogen peroxide on 4 3 potassium niobate. It yields tetragonal crystals. [Pg.168]

Rubidium Pemiobate, Rb3Nb08, is obtained as a white, crystalline powder by the action of rubidium carbonate and excess of hydrogen peroxide on 4 3 rubidium niobate. [Pg.168]

It is not attacked by dilute sulphuric acid in the cold, but on warming the mixture hydrogen peroxide is formed. Pervanadic acid, on the other hand, is decomposed by cold dilute sulphuric acid. Pemiobic acid occupies an intermediate position in the order of stability.1... [Pg.203]

See other pages where Pemiobates is mentioned: [Pg.167]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.203]    [Pg.39]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.167]    [Pg.203]    [Pg.39]   
See also in sourсe #XX -- [ Pg.166 , Pg.167 ]



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Potassium pemiobates

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