Empirical and Molecular Formula

Front

What is an empirical formula?

Back

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

Front

What is a molecular formula?

Back

A molecular formula shows the actual number and kinds of atoms present in one molecule of a compound.

Front

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

Back

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

Front

What is the empirical formula for C6H12?

Back

The empirical formula is CH2.

Front

Which of the following has the same empirical formula: C2H4O2 and C6H12O6?

Back

Yes, both have the empirical formula CH2O.

Front

What is the empirical formula for the molecular formula C5H12?

Back

The empirical formula is C5H12.

Front

What is the difference between empirical and molecular formulas?

Back

Empirical formulas represent the simplest ratio of elements, while molecular formulas represent the actual number of atoms.

Front

If a compound has a molecular formula of C4H10, what is its empirical formula?

Back

The empirical formula is C2H5.

Front

What is the empirical formula for Na2Cr2O7?

Back

The empirical formula is NaCrO4.

Front

What does the molecular formula C2H6 represent?

Back

It represents a molecule of ethane.