Empirical and Molecular Formula Reteach

Front

What is an empirical formula?

Back

An empirical formula represents the simplest whole-number ratio of atoms of each element in a compound.

Front

How do you determine the empirical formula from a molecular formula?

Back

To find the empirical formula, divide the subscripts in the molecular formula by their greatest common divisor.

Front

What is the empirical formula of Si2F6?

Back

SiF3

Front

What is the empirical formula of C2F6?

Back

CF3

Front

What is the empirical formula of C6H12O6?

Back

CH2O

Front

What is the empirical formula of CaCl2?

Back

CaCl2 is already in its simplest form.

Front

What is the molecular formula of a compound with an empirical formula of CH2O and a molar mass of 180.18 g/mol?

Back

C6H12O6

Front

What is the relationship between empirical and molecular formulas?

Back

The molecular formula is a multiple of the empirical formula, indicating the actual number of atoms in a molecule.

Front

How can you identify compounds with the same empirical formula?

Back

Compounds with the same empirical formula have the same ratio of elements, but may differ in molecular formula.

Front

What is the empirical formula of NaCrO4 and Na2Cr2O7?

Back

Both have the same empirical formula of NaCrO4.