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منتدى علم الكيمياء / Essential & Non essential water
« في: ديسمبر 19, 2002, 09:58:56 مساءاً »
السلام عليكم
حبيت اشارك بموضوع بسيط قريته في كتاب عن الكيمياء العامه واتمنى انكم تستفيدون منه ولو شوي .. والموضوع راح اكتبه بالانجليزي واذا احتجتوا لأي ترجمه انا موجوده ..
والموضوع يتحجى عن مقارنه بين المركبات اللي يكون فيها الماء مكون اساسي او غير اساسي ...
essential water :is the water that is an integrl part of a solid chemical compound which is a stable solid hydrate
Example
Bacl2.2H2O
* Essential water have 2 types :
1) water of costitution : is water that is formed when a pure solid is decompersed by heat or other chemical treatment
Example : KHSo4 ... NaHCo3
2) water of Crystallization : when solid heated at high temperature . it looses it`s water containt &changes it`s physical appearance
Example : CuSo4.5H2O ----->CuSo4 +5H2O
blue white gas
Non Essential water : is the water that is phsically retained by solid.
Types :
1) adsorbed water : is a type of non essential water that is retained on the surface.
2) sorbed water : quantity of sorbed water is often large 20 %or more .. Example : collidal substance.
3) occluded water liquid water entrapped in microscopic pockets . Example : minerals troks
واسفه على التقصير .. اختكم زهور
حبيت اشارك بموضوع بسيط قريته في كتاب عن الكيمياء العامه واتمنى انكم تستفيدون منه ولو شوي .. والموضوع راح اكتبه بالانجليزي واذا احتجتوا لأي ترجمه انا موجوده ..
والموضوع يتحجى عن مقارنه بين المركبات اللي يكون فيها الماء مكون اساسي او غير اساسي ...
essential water :is the water that is an integrl part of a solid chemical compound which is a stable solid hydrate
Example
Bacl2.2H2O
* Essential water have 2 types :
1) water of costitution : is water that is formed when a pure solid is decompersed by heat or other chemical treatment
Example : KHSo4 ... NaHCo3
2) water of Crystallization : when solid heated at high temperature . it looses it`s water containt &changes it`s physical appearance
Example : CuSo4.5H2O ----->CuSo4 +5H2O
blue white gas
Non Essential water : is the water that is phsically retained by solid.
Types :
1) adsorbed water : is a type of non essential water that is retained on the surface.
2) sorbed water : quantity of sorbed water is often large 20 %or more .. Example : collidal substance.
3) occluded water liquid water entrapped in microscopic pockets . Example : minerals troks
واسفه على التقصير .. اختكم زهور