The empirical formula of an organic compound is c1,H2,o.if the empirical formula mass of the compound is 30.find the percentage composition of the elements in the compound
To find the percentage composition of each element in the compound, we need to determine the molar mass of each element and divide it by the empirical formula mass of the compound (30).
The molar mass of carbon (C) is 12.01 g/mol.
The molar mass of hydrogen (H) is 1.008 g/mol.
The molar mass of oxygen (O) is 16.00 g/mol.
Percentage composition of carbon:
(Carbon's molar mass / Empirical formula mass) x 100
= (12.01 g/mol / 30 g/mol) x 100
= 40.03%
Percentage composition of hydrogen:
(Hydrogen's molar mass / Empirical formula mass) x 100
= (1.008 g/mol / 30 g/mol) x 100
= 3.36%
Percentage composition of oxygen:
(Oxygen's molar mass / Empirical formula mass) x 100
= (16.00 g/mol / 30 g/mol) x 100
= 53.30%
Therefore, the percentage composition of the elements in the compound is approximately:
Carbon: 40.03%
Hydrogen: 3.36%
Oxygen: 53.30%