TS EAMCET 11-Sep-2020 Shift 1 Solved Paper

Given, empirical formula of compound =C2H5O
Vapour density =45
Molecular formula = ?
Empirical formulas show the simplest whole number ratio of atoms in a compound.
Molecular formula show the number of each type of atom in a molecule.
Relation between empirical formula and molecular formula.
Molecular formula =n (empirical formula)
Molecular weight =2× vapour density =2×45=90
Let, the molecular formula be C2xH5xOx.
Therefore, Value of x=2
Molecular formula =(C2H5O)2=C4H10O2