Hydrated Salts (AQA A-Level Chemistry): Flashcards
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Hydrated salts
Hydrated salts
Ionic compounds with water molecules in their crystalline structure
Water of crystallisation
Water of crystallisation
Water molecules in hydrated salt structure
Anhydrous salt
Anhydrous salt
Dry form of salt with water removed
Heating to constant mass purpose
Heating to constant mass purpose
To remove all water of crystallisation and determine mass lost
Formula notation meaning
Formula notation meaning
7 water molecules per formula unit
Calculate mass of water lost method
Calculate mass of water lost method
Subtract anhydrous mass from hydrated mass
Why heat until mass stays constant
Why heat until mass stays constant
Ensures all water of crystallisation removed
What heating hydrated salt determines
What heating hydrated salt determines
Number of water molecules per formula unit
Molar mass of water ()
Molar mass of water ()
18.02 g/mol
Practical tip for heating hydrated salts
Practical tip for heating hydrated salts
Heat multiple times, weigh until mass no longer decreases