Understanding Normality
* Normality (N) is a measure of concentration that expresses the number of equivalents of a solute per liter of solution.
* Equivalents are moles of a substance that can react with or replace one mole of hydrogen ions (H⁺) in an acid-base reaction.
Calculating Normality of H₂SO₄
1. Identify the number of acidic hydrogen ions (H⁺) per molecule: H₂SO₄ has two acidic hydrogen ions.
2. Multiply the molarity by the number of acidic hydrogen ions:
Normality (N) = Molarity (M) * Number of H⁺ ions
N = 1.25 M * 2 = 2.5 N
Therefore, the normality of a 1.25 M solution of H₂SO₄ is 2.5 N.
