The formula to calculate Normality (N) is:
\[ \text{N} = \frac{\text{Eq}}{\text{V}} \]
Where:
Normality in chemistry refers to the concentration of a substance in a solution. It is defined as the number of equivalents of a solute per liter of solution. Equivalents represent the number of moles of a solute that can undergo a specific chemical reaction.
Normality is important for measuring the reactivity of a substance in a solution. It allows scientists to determine the quantity of a substance required for a reaction and predict the extent to which the reaction will occur. This standardized measure is particularly useful in acid-base reactions for making precise calculations.
Let's consider an example:
Using the formula to calculate Normality:
\[ \text{N} = \frac{0.5}{2.0} = 0.25 \text{ N} \]
This means that the Normality of this solution is 0.25 N.