Molecular compounds consist of a large collection of molecules. The molar mass (or molecular weight) of a molecular compound is defined in the following way: Therefore, to get the molar mass of a molecular compound we need simply determine the molar mass of molecules. For sucrose (table sugar) we have the molecular formula C12H22O11 and the molar mass would be
Or, we would say that the molar mass of sucrose = 342.3 g/mol (i.e., a mole of sucrose molecules has a mass of 342.3 g) |
