Enter your Acid Molarity, Volume, and H⁺ per Acid alongside Base Molarity, Volume, and OH⁻ per Base, and the Equivalence Point Calculator determines your Calculated Value, Equivalence Validation, and Moles of H⁺/OH⁻.
Calculated Value
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Equivalence Validation
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Moles of H⁺
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Moles of OH⁻
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The equivalence point is when the moles of H⁺ from the acid exactly equal the moles of OH⁻ from the base (MₐVₐnₐ = MᵦVᵦnᵦ). At this point, the acid and base have completely neutralized each other.
Use the formula MₐVₐnₐ = MᵦVᵦnᵦ where M is molarity, V is volume, and n is the number of H⁺ or OH⁻ ions. Input known values and solve for the unknown parameter by algebraic rearrangement.
For acids: HCl (n=1), H₂SO₄ (n=2), H₃PO₄ (n=3). For bases: NaOH (n=1), Ca(OH)₂ (n=2), Al(OH)₃ (n=3). The n value represents ionizable protons or hydroxide ions per molecule.
Yes, the calculator supports polyprotic acids and polyhydroxide bases. Simply adjust the nₐ value for acids (like H₂SO₄ with nₐ=2) and nᵦ value for bases (like Ca(OH)₂ with nᵦ=2).
The calculator accepts both milliliters (mL) and liters (L). It automatically converts between units during calculations to ensure accurate results using the equivalence formula.
Measure the volume of acid, determine the acid's n value, then titrate with a base of known molarity and volume. Use MₐVₐnₐ = MᵦVᵦnᵦ to solve for Mₐ.
The equivalence point is the theoretical point where moles of acid equal moles of base. The endpoint is when the indicator changes color, which should ideally match the equivalence point but may differ slightly in practice.