Free Acid Dilution Calculator

Calculate the final concentration or volume needed when diluting an acid solution using the dilution equation C₁V₁ = C₂V₂.

M
mL
mL

Final Acid Concentration (C₂)

0.1200 M

Water to Add990.0 mL

Final Acid Concentration (C₂) vs Initial Acid Concentration (C₁)

How to Dilute an Acid

Formula

C₁V₁ = C₂V₂

Solving for C₂: C₂ = C₁V₁ / V₂

Where:

  • C₁ = initial concentration
  • V₁ = volume of concentrated acid
  • C₂ = final concentration
  • V₂ = final total volume
  • Safety: Always add acid to water, never water to acid.

    Example Calculation

    Dilute 10 mL of 12 M HCl to a final volume of 1000 mL.

    1. 01C₂ = C₁V₁ / V₂
    2. 02C₂ = (12 × 10) / 1000
    3. 03C₂ = 120 / 1000
    4. 04C₂ = 0.12 M

    Frequently Asked Questions

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