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Talk:Lithium: Difference between revisions
>David Hedlund Undo revision 136759 by Cristobaldelicia (talk) |
>David Hedlund Undo revision 136758 by Cristobaldelicia (talk) |
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==Chemistry== | ==Chemistry== | ||
{{chemistry}} | {{chemistry}} | ||
Unlike sodium carbonate, which forms at least three hydrates, lithium carbonate exists only in the anhydrous form.[13] Its solubility in water is low relative to other lithium salts. The isolation of lithium from aqueous extracts of lithium ores capitalizes on this poor solubility. Its apparent solubility increases 10-fold under a mild pressure of carbon dioxide; this effect is due to the formation of the metastable bicarbonate, which is more soluble: Li2CO3 + CO2 + H2O ⇌ 2 LiHCO3 | Unlike sodium carbonate, which forms at least three hydrates, lithium carbonate exists only in the anhydrous form.[13] Its solubility in water is low relative to other lithium salts. The isolation of lithium from aqueous extracts of lithium ores capitalizes on this poor solubility. Its apparent solubility increases 10-fold under a mild pressure of carbon dioxide; this effect is due to the formation of the metastable bicarbonate, which is more soluble:[7] | ||
Li2CO3 + CO2 + H2O ⇌ 2 LiHCO3 | |||
The extraction of lithium carbonate at high pressures of CO2 and its precipitation upon depressuring is the basis of the Quebec process. | The extraction of lithium carbonate at high pressures of CO2 and its precipitation upon depressuring is the basis of the Quebec process. | ||