Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. (If the water is heavy water, where the hydrogen consists of the isotope deuterium, then the term deuterate may be used in place of hydrate.) These substances do not contain water as such, but have their constituents (hydrogen, oxygen, hydroxyl) so arranged that water may be eliminated. Hence, hydrates are derivatives of, or compounds with, hydroxyl. Such a substance is considered to be anhydrous when it is not in such a union with water. The notation of ''anhydrous compound''·''n''H2O, where ''n'' is the number of water molecules per molecule of anhydrous salt, is commonly used to show that a salt is hydrated. The ''n'' is usually a low integer, though it is possible for fractional values to exist. Examples include: borax, hydroxide, ethyl hydrate (ethanol), clathrate hydrate, calcium hydroxide and chalcanthite. See also: Anhydrate Chemistry
I'm very unclear about the appropriateness of substances such as Ethanol as a ''hydrate'' in the sense that the water can be eliminated. Clearly Ethanol is usually found bound with water (cf. anhydrous alcohol) which can be eliminated to a degree by distallation --- but the substance itself I'm not so sure. Now I understand that Ethyl Hydrate is sometimes used as synonym to Ethanol but I think the distinction should be made more clearly - what do others think? The same surely applies to hydroxide. Water cannot be removed from a hydroxide - any more than an oxide or a carbonate (except of course where there is molecular water integrated into the crystal structure). User:CustardJack 11:43, 11 May 2005 (UTC)
See other meanings of words starting from letter:
Words begining with Hydrate:
Hydrate
Hydrate
Hydrated
Hydrated_lime
Hydrated_sodium_borate_hydroxide
Hydrates
Hydrate_salt
Hydrate
Hydrates are compounds formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. (If the water is heavy water, where the hydrogen consists of the isotope deuterium, then the term deuterate may be used in place of hydrate.) These substances do not contain water as such, but have their constituents (hydrogen, oxygen, hydroxyl) so arranged that water may be eliminated. Hence, hydrates are derivatives of, or compounds with, hydroxyl. Such a substance is considered to be anhydrous when it is not in such a union with water. The notation of ''anhydrous compound''·''n''H2O, where ''n'' is the number of water molecules per molecule of anhydrous salt, is commonly used to show that a salt is hydrated. The ''n'' is usually a low integer, though it is possible for fractional values to exist. Examples include: borax, hydroxide, ethyl hydrate (ethanol), clathrate hydrate, calcium hydroxide and chalcanthite. See also: Anhydrate Chemistry
Hydrate
I'm very unclear about the appropriateness of substances such as Ethanol as a ''hydrate'' in the sense that the water can be eliminated. Clearly Ethanol is usually found bound with water (cf. anhydrous alcohol) which can be eliminated to a degree by distallation --- but the substance itself I'm not so sure. Now I understand that Ethyl Hydrate is sometimes used as synonym to Ethanol but I think the distinction should be made more clearly - what do others think? The same surely applies to hydroxide. Water cannot be removed from a hydroxide - any more than an oxide or a carbonate (except of course where there is molecular water integrated into the crystal structure). User:CustardJack 11:43, 11 May 2005 (UTC)
See other meanings of words starting from letter:
H
HA | HB | HC | HD | HE | HF | HG | HI | HJ | HK | HL | HM | HN | HO | HP | HR | HS | HT | HU | HW | HX | HY | HZ |Words begining with Hydrate:
Hydrate
Hydrate
Hydrated
Hydrated_lime
Hydrated_sodium_borate_hydroxide
Hydrates
Hydrate_salt
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