Calculation of Normality of a 3 Molar Solution of Calcium Hydroxide

Calcium hydroxide, Ca(OH)2, is a strong base with a molar mass of 74.10 g/mol. To determine the normality of a 3 molar solution of calcium hydroxide, we need to understand the concept of normality.

Understanding Normality

Normality is a measure of concentration that takes into account the equivalent weight of a substance. For acids and bases, normality is defined as the number of equivalents of the solute per liter of solution. In the case of calcium hydroxide, which is a base, the equivalent weight is half the molar mass of the compound due to the presence of two hydroxide ions per molecule.

Calculating Normality

To calculate the normality of a solution, we use the formula:

Normality (N) = Molarity (M) × Number of equivalents

For calcium hydroxide, the number of equivalents is 2 (since there are two hydroxide ions per molecule). Given that the molarity (M) is 3, we can substitute these values into the formula:

Normality (N) = 3 M × 2 equivalents = 6 N

Therefore, the normality of a 3 molar solution of calcium hydroxide is 6 N.

Conclusion

In conclusion, the normality of a solution is a crucial parameter that accounts for the equivalent weight of a substance. By understanding the concept of normality and applying the appropriate formula, we can calculate the normality of a 3 molar solution of calcium hydroxide as 6 N. This information is vital for accurate and precise chemical calculations and measurements.