Samples Containing Strontium or Barium

Oxides, Hydroxides, Carbonates

The oxides are white and are obtained by ignition of the hydroxide, carbonate, nitrate, oxalate and all of their organic salts. The oxides, hydroxides and carbonates are all readily soluble in dilute acids combining to form the ions of the corresponding salt. They absorb CO₂ from the air, becoming carbonates. In moist air, oxides become hydroxides, with the generation of heat if sufficient water is present. The hydroxides dissolve readily in dilute acids and are much more soluble in water than the corresponding Ca hydroxide.

The oxide, hydroxide and carbonate are all readily soluble in dilute acids. Most analysts prefer dilute (1:1) nitric acid.

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