A compound X consists fo 4.8 % carbon and 95.2 % bromine by mass:
(i) Determine the empirical formula of this compound working correctly to one decimal place (C = 12; Br = 80).
(ii) If the vapour density of the compound is 252, what is the molecular formula of the compound?
i) Calculation of Empirical formula
|Element||%age||Relative No. of atoms||Simple|
Empirical Formula =
ii) Relative molecular mass = VD × 2
= 252× 2 = 504
Empirical Mass = 12 + 80 × 3 = 252
Molecular fomula =()2