The solubility of silica in hydrochloric acid at different concentrations?
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I know that silica does not react with hydrochloric acid, but can it dissolve? If possible, please provide information on the dissolution behavior in hydrochloric acids of different concentrations. O(∩_∩)O Thank you
Silica cannot dissolve in hydrochloric acid.
Silica is only soluble in hydrofluoric acid and alkalis
Hehe! I even thought about using silica to serve as an adsorbent for hydrogen in exhaust gas recovery, but it’s just a thought; I haven’t found any appropriate data or theoretical basis yet
Agree with the opinion on floor 6: it is insoluble in hydrochloric acid, because it is SiO2, and that’s the case in nature as well
1# lichsh1985 Silicate ions precipitate under acidic conditions; acidifying sodium silicate yields silica gel
Silica is divided into hydrophilic and hydrophobic types. Hydrophobic silica certainly won’t work, but hydrophilic silica does not dissolve very well in hydrochloric acid! !
Strictly speaking, it’s not dissolution; it’s more like a colloidal state. A higher concentration of hydrochloric acid should allow for more “dissolution,” but I haven’t come across any information on this yet. You could check that book, “The Chemistry of Silica,” to see if there’s anything relevant. Generally, 10% concentration is sufficient for “dissolution.”