Chemistry: Normality of Chemical Solutions

Normality

• A gram equivalent weight of solute per liter of solution is the normality unit of concentration for a chemical solution.
• Normality is the only measure of chemical concentration that is dependent on the chemical reaction under investigation.
• N, eq/L, and meq/L are standard units of normality.
• Normality is not always the most frequent measure of concentration, and its application to all chemical solutions is not acceptable.
• Molarity or molality are superior possibilities for units in most other circumstances.

Formula and Calculation

• N = Molarity × Molar mass × [Equivalent mass]-1
• To indicate concentration, a specific equivalency factor must be employed.

Applications of Normality

• Normality might be useful in acid-base chemistry.
• Normality might be useful in redox processes.
• Normality might be useful in precipitation reactions.