C2.1.2 - Empirical Formula Flashcards
1
Q
What is an empirical formula?
A
An empirical formula shows the simplest whole-number ratio of the formula for a substance
2
Q
How do you simplify formulae into the empirical formula?
A
You divide by the highest common factor
3
Q
What are the advantages of writing an empirical formula?
A
It is easier to understand
It is easier to note down
It gives you a simple ratio
4
Q
What are the disadvantages of the empirical formula?
A
It does not tell you the exact amounts of each atom
5
Q
How do you work out the relative formula mass from an equation?
A
You do the equation again, except substituting the terms for there relative mass
6
Q
What would the empirical formula be for C4H10 - Butane?
A
C2H5
