Empirical formula

The video tutorial explains the concept of empirical formulas, using calcium chloride as an example, where the empirical formula is CaCl2, indicating two chlorine atoms for each calcium atom. It further discusses how empirical formulas for covalent compounds are often simpler than their molecular formulas, exemplified by glucose, which has a molecular formula of C6H12O6 that simplifies to an empirical formula of CH2O.

What is the empirical formula for calcium chloride?

• CaCl

• Ca2Cl

• Ca2Cl2

• CaCl2

In the empirical formula of calcium chloride, how many chlorine atoms are there for each calcium atom?

• Four

• Two

• Three

• One

Which of the following statements is true about empirical formulas?

• They are never used in chemistry.

• They are always more complex than molecular formulas.

• They are always identical to molecular formulas.

• They are often simpler than molecular formulas.

What is the molecular formula of glucose?

• C2H4O2

• C6H12O6

• C3H6O3

• CH2O

What is the empirical formula of glucose?

• CH2O

• C2H4O2

• C6H12O6

• C3H6O3