Topic 5- Quantitive Chemistry Flashcards
1
Q
Mass=
A
RFM x moles
2
Q
What is heating to constant mass
A
When you heat a substance until the mass of it doesn’t change on further heating, due to all it’s produced gases being given off, evens water particles
3
Q
What is water of crystallisation
A
When water is chemically bonded to a crystal structure
4
Q
What does hydrated mean
A
That solid crystals contain water if crystallisation
5
Q
What does dehydrated mean
A
The removal of water of solid crystals
6
Q
What does anhydrous mean
A
Does not contain water of crystallisation
7
Q
How do you work out percentage yield
A
Theoretical yield/ actual yield x 100
8
Q
Why is theoretical yield never 100% (4)
A
Loss in mechanical transfers, one container to another
Loss in separating funnel
Side reaction
The reaction has not finished
