Gen-Chem-1 Empirical and - Molecular Formulas Lesson-6
Gen-Chem-1 Empirical and - Molecular Formulas Lesson-6
Gen-Chem-1 Empirical and - Molecular Formulas Lesson-6
Formulas
• Empirical Formula: a formula
which has been reduced to the
lowest terms.
1. Percent to mass
2. Mass to mole
3. Divide by small
4. Multiply 'til whole
Example 1: Find the empirical formula of a
compound which contains 54.93% potassium,
38.73% boron and 6.34% hydrogen.
Example 2: Find the empirical formula for a
compound which contains 26.8% Sn, 16.0%
Cl and 57.2% I.
Molecular Formulas – are either the
same as it’s experimentally
determined empirical formula or it’s
some whole number multiple of it.