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Silicic acids can be seen as hydrated forms of silica, namely 2 H 2x SiO x+2 = SiO 2 ·(H 2 O) x. Indeed, in concentrated solutions, silicic acids generally polymerize and condense, and ultimately degrade to silicon dioxide and water. The intermediate stages may be very thick liquids or gel-like solids.
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, commonly found in nature as quartz. [5] [6] In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant families of materials, existing as a compound of several minerals and as a
2009 silicic acid concentration in the upper pelagic zone. [19] Dissolved silica (DSi) is a term used in the field of oceanography to describe the form of water-soluble silica, which is assumed to be Si(OH) 4 (orthosilicic acid) or its conjugate bases (orthosilicate anions) such as − O−Si(OH) 3 and (− O−) 2 Si(OH) 2.
Why is fiber so important? Fiber is a type of carbohydrate that the body can’t digest, yet it plays a crucial role in maintaining overall health. There are two types of fiber: soluble and insoluble.
Many hydrates and silicic acids exist in the most dilute of aqueous solutions, but these are rather insoluble and quickly precipitate and condense and cross-link to form various polysilicic acids of variable combinations following the formula [SiO x (OH) 4−2x] n, similar to the behaviour of boron, aluminium, and iron, among other elements.
It's found in plant-based foods and can be divided into two types: soluble and insoluble. Soluble fiber dissolves in water and forms a gel-like substance that slows digestion; these ...
In acidic solutions, the silicate ions react with hydrogen ions to form silicic acids, which tend to decompose into hydrated silicon dioxide gel. [citation needed] Heated to drive off the water, the result is a hard translucent substance called silica gel, widely used as a desiccant. It can withstand temperatures up to 1100 °C. [citation needed]
[5] [6] It results in the generation of silicic acid in aqueous environments. Silicic acid, Si(OH) 4, is a hydrated form of silica found only as an unstable solution in water, yet it plays a central role in the silica cycle. [1] Silicifiers are organisms that use silicic acid to precipitate biogenic silica, SiO 2.
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