Question #fabcb
1 Answer
Consider a sample of 182 grams of such substance (approximately one mole). It contains:
Given that in a molecule there are integer number of atoms, that equal numbers of moles means equal numbers of atoms, we deduce that in each molecule there are:
a) the same number of carbon and oxygen atoms, i.e. 6
b) double number of H atoms, that is 12.
The molecular formula is therefore:
The true molecular mass should be:
A value of 182 deduced from osmosis experiments is just one percent bigger, as due to experimental errors.
