C2.3.3 Quantitative chemistry Flashcards
1
Q
How do you calculate the percentage of an element/compound in a compound?
A
(Ar of element you’re finding/Mr of formula) x 100
2
Q
From what can you calculate the empirical formula?
A
Mass or percentage of the elements in a compound
Ar
3
Q
Why is the estimated yield not always possible to obtain
A
Reaction may not go to completion because it is REVERSIBLE
- Some reactants may REACT DIFFERENTLY from expected
- Some of the product may be lost when separated from the reaction mixture
4
Q
Define ‘yield’
A
The amount of product obtained
5
Q
Define ‘reversible reaction’
A
The products of the chemical reaction can react to produce the original reactants
