O/N 2018/P12/Q35
Which compound has the empirical formula with the greatest relative formula mass?
A- C2H6
B- C4H10
C- C5H10
D- C6H6
Answer: B
Explaination
The more number of atoms an organic compound has, the greatest relative mass it has. So, first we need to find the empoirical formula of the given compounds, whichever has the greatest number of atoms in it will be considered as eth answer.
Compound | Empirical Formula | Relative Mass |
C2H6 | CH3 | |
C4H10 | C2H5 | |
C5H10 | CH2 | |
C6H6 | CH |
As we can see from the table above although we don’t need really need to find the relative mass of each, as by the numbers of atom, C4H10 is the compound with the greatest number of atoms.
