Anhydrous and hydrated salts Flashcards
1
Q
What does anhydrous mean?
A
Contains no water molecules
2
Q
What does hydrated mean?
A
A crystalline compound containing water molecules
3
Q
What are waters of crystallisation?
A
Water molecules that are chemically bonded into a crystalline structure of a compound
4
Q
What is the formula of a hydrated salt?
A
MX.x H2O (MX = anhydrous salt which is a metal/ammonia)
5
Q
How do you find the formula of a hydrated salt?
A
The same as empirical formula
6
Q
What is a procedural uncertainty?
A
Uncertainties to do with the experimental method
7
Q
Why do you heat the solid twice in this experiment?
A
To make sure all the water is heated off
8
Q
If masses are different after reheating, what do you do?
A
Continue to heat and weigh periodically until there is no change in mass
