Class 11 Chemistry simulations · Some Basic Concepts of Chemistry

Molarity and dilution

Dissolve a solute, then add water and see the molarity fall while the moles of solute stay the same.

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What to notice

Dilution changes the volume, not the amount of solute, so concentration falls in proportion.

Key relation

M = n / V(L) ; M₁V₁ = M₂V₂

Try this

Make 100 mL of 1 M solution and dilute it to 250 mL. What is the new molarity?

What you can change

• Moles of NaCl: 0.01 to 0.5 mol
• Starting volume: 50 to 250 mL
• Water added: 0 to 500 mL

More in Some Basic Concepts of Chemistry

• Empirical formula from percentage composition
• Limiting reagent: making water
• Mole concept: mass, moles and particles

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