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WorksheetsEMPIRICAL AND MOLECULAR FORMULAE
Total questions: 10
Worksheet time: 5mins
What is the empirical formula for the following molecular formula: C6H14
C6H14
C3H7
CH2
CH3
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180?
CH2O
C2H4O2
C4H8O4
C6H12O6
What is the molecular formula of a compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole?
C2O4H8
C8O2H4
C4O2H8
C4O8H2
What is the empirical formula for the following molecular formula: C5H12
C5H12
CH3
CH2
C2.5H6
The molecular formula gives
simplest ratio of atoms
actual whole number ratio of atoms
whole number ratio of atoms
natural number ratio of atoms
The empirical formula for a hydrocarbon is found to be CH2. In a separate experiment, the molar mass is determined to be approximately 112 g mol-1. The number of hydrogens in the molecular formula of the hydrocarbon is therefore
8
12
16
20
Among the following the compounds having different empirical and molecular formula are
H2SO3
HNO3
H2CO3
CH3COOH
Succinic acid has a simple formula of C2H3O2 and a molecular weight of 118 grams/mol. What is the molecular formula of succinic acid?
Atomic weights: C = 12.0, H = 1.01, O = 16.0
C8H12O8
C2H3O2
C3H6O3
C4H6O4
Butene has a simple formula of CH2 and a molecular weight of 56.0 g/mol. What is the molecular formula of butene?
Atomic weights: C = 12.0; H = 1.0
C2H4
C3H4
C6H8
C4H8
The empirical formula for Caffeine (C8H10N4O2) is:
C5H5N2O
C4H5N2O
C4H5NO
C4H5NO2
