Dilution Calculator
Calculate stock volume and approximate diluent volume from stock concentration, target concentration, and final solution volume using C1V1 = C2V2.
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Concentration and pH Calculator
Calculate molarity from moles and solution volume, then estimate strong-acid or strong-base pH when that branch is selected.
Boiling and Freezing Point Change Calculator
Calculate boiling-point elevation and freezing-point depression from molality, solvent constants, and the van’t Hoff factor.
1:1 A-B Equilibrium ICE Table Calculator
Solve a one-to-one A ⇌ B equilibrium with Kc and initial concentrations, showing the ICE-table extent and a small-change diagnostic.
Balanced-Equation Stoichiometry Calculator
Check a two-reactant balanced equation by coefficient ratio, calculate reaction extent, product moles, and leftover reactants.
Catalyst Loading Calculator
Convert catalyst loading between mol%, equivalents, and ppm, then calculate catalyst amount from a base amount in moles.
Buffer pH Calculator
Calculate buffer pH from pKa and conjugate-base to weak-acid concentrations. See the Henderson-Hasselbalch formula, assumptions, steps, and limitations.
Two-Point Absorbance Calibration Calculator
Fit a two-point absorbance calibration line, calculate slope and intercept, and estimate an unknown concentration with blank-aware interpretation.
Beer-Lambert Law Calculator
Use A = εlc to calculate absorbance or concentration from molar absorptivity, path length, and concentration. Includes units, steps, assumptions,…
Acid-Base Titration pH Calculator
Calculate the pH at a selected point in a strong-acid/strong-base titration, including excess moles and total volume.