Mass and volume relationship of reactions 1

CHEMISTRY  SSS2  First Term

WEEK 5

Mass and volume relationship of reactions 1

Performance objectives

Students should be able to:

1. Explain the concept mole, molar quantities, and molar concentrations
2. Solve calculations on no of moles and molar concentrations
3. Define the term molar volumes, molecular mass, and relative densities.

Content

Mole concepts, mole ratio, and molar concentration

 A mole of a substance is defined as The mass of substance containing the same number of fundamental units as there are atoms in exactly 12.000 g of ¹²C. Fundamental units may be atoms, molecules, or formula units, depending on the substance concerned.

 One mole of any element contains the same number of atoms in the element and it is also equal to its…