🧪 How to Use the Molarity Calculator

The Molarity Calculator helps you find the molarity of a solution using two easy methods:

✅ Method 1: From Normality

Use this method if you know the normality of the solution.

🔹 What You Enter:

• Select a compound from the dropdown
• Enter the normality value (in N, mN, µN)
• Or, choose to manually enter the n-factor

⚙️ How It Works:

• The calculator retrieves the n-factor of the compound automatically
• It then calculates molarity using:

\[ \text{Molarity} = \frac{\text{Normality}}{\text{n-factor}} \]

📌 Example:

Q: What is the molarity of a 2 N H₂SO₄ solution?

✅ Select compound = H₂SO₄
✅ Enter: Normality = 2N

✅ Hit Calculate
💡 The calculator uses H₂SO₄’s n-factor = 2 and computes: Molarity = 2 ÷ 2 = 1 M

✅ Method 2: From Mass of Solute

Use this when you know the mass of solute and volume of solution.

🔹 What You Enter:

• Select a compound (to auto-fill molar mass)
  • OR manually enter molar mass
• Mass of solute (g, mg, µg)
• Volume of solution (L, mL, µL)

⚙️ How It Works:

• The calculator calculates moles of solute:

\[ \text{Moles} = \frac{\text{Mass}}{\text{Molar Mass}} \]

• Then computes molarity:

\[ \text{Molarity} = \frac{\text{Moles}}{\text{Volume (L)}} \]

📌 Example:

Q: What is the molarity if you dissolve 29.22 g NaCl in 500 mL of solution?

✅ Choose “From Mass of Solute”
✅ Select compound = NaCl
✅ Enter: Mass = 29.22g, Volume = 500ml

✅ Hit Calculate
💡 The calculator uses NaCl’s molar mass = 58.44 g/mol and computes:
Moles = 29.22 ÷ 58.44 = 0.5 mol
Molarity = 0.5 ÷ 0.5 = 1 M