Normality Calculator
🧪 How to Use the Normality Calculator?
Our Normality Calculator helps you calculate the normality of a chemical solution using two simple methods:
✅ Method 1: From Molarity- Use this when you already know the molarity of your solution.
🔹 What You Need to Enter?
- The molarity value (e.g. in M, mM, µM)
- The chemical compound (select from dropdown)
- OR you can manually enter the n-factor if the compound is not listed
⚙️ How It Works:
- When you select a compound, the calculator automatically retrieves the n-factor from its database.
- The normality is calculated using the formula: Normality = Molarity × n-factor
What is n-factor?
The n-factor is the number of equivalents per mole of solute. It depends on the type of substance:
Acids: Number of H⁺ ions the acid can donate
e.g., H₂SO₄ → n-factor = 2
Bases: Number of OH⁻ ions the base can donate
e.g., Ca(OH)₂ → n-factor = 2
📌 Example:
Q: What is the normality of 1 M H₂SO₄?
✅ Select compound = H₂SO₄
✅ Enter: Molarity = 1 M
✅ Hit Calculate
➡️ The calculator retrieves H₂SO₄’s n-factor (2) and calculates: Normality = 1 × 2 = 2 N
✅ Method 2: From Mass of Solute- Use this when you know the mass of solute and the volume of the solution.
🔹 What You Need to Enter?
- The weight of the solute (in g, mg, or µg)
- The volume of the solution (in L, mL, or µL)
- The chemical compound (select from dropdown)
- OR manually enter the equivalent weight if needed
⚙️ How It Works:
- When you select a compound, the calculator loads its equivalent weight automatically.
- Then it calculates normality using the formula:
📌 Example:
Q: What is the normality of 49 g H₂SO₄ in 1 liter of solution?
✅ Choose “From Mass of Solute”
✅ Select compound = H₂SO₄
✅ Enter: Weight = 49 g, Volume = 1 L
✅ Hit Calculate
➡️ The calculator retrieves H₂SO₄’s equivalent weight and computes the normality for you.
✅ Key Benefits:
- No need to memorize or calculate n-factors or equivalent weights — we’ve already done that for you.
- Unit conversion is automatic.
- You can manually enter values if the compound isn’t in the list.