Chemistry
Chemistry calculators for molarity, dilution, stoichiometry, ideal gas law, buffer solutions, titration, and thermodynamics.
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Boiling Point Elevation
Calculate the boiling point elevation of a solution from the ebullioscopic constant, molality, and van't Hoff factor.
Buffer Solution Calculator
Calculate buffer pH using the Henderson-Hasselbalch equation. Enter pKa, acid concentration, and conjugate base concentration.
Calorimetry Calculator
Calculate heat energy (q) from mass, specific heat capacity, and temperature change using the calorimetry equation q = mcΔT.
Dilution Calculator (C1V1=C2V2)
Calculate required volumes for solution dilution using the C1V1 = C2V2 equation. Essential for lab work and preparing standard solutions.
Electrochemistry Cell Potential
Calculate electrochemical cell potential using standard reduction potentials and the Nernst equation. Includes Gibbs free energy and equilibrium constant.
Electron Configuration Generator
Generate the electron configuration for any element by atomic number. Follows the Aufbau principle to fill s, p, d, and f orbitals.
Empirical Formula Finder
Determine the empirical formula of a compound from elemental percent composition. Supports C, H, O, and N.
Equilibrium Constant Calculator
Calculate the equilibrium constant (Keq) from product and reactant concentrations with stoichiometric coefficients. Includes Gibbs free energy.
Freezing Point Depression
Calculate the freezing point depression of a solution from the cryoscopic constant, molality, and van't Hoff factor.
Ideal Gas Law Calculator
Solve PV = nRT for any unknown variable — pressure, volume, moles, or temperature. Includes isothermal P-V curve visualization.
Molarity Calculator
Calculate molarity (moles per liter) from mass, molecular weight, and solution volume. Essential for preparing laboratory solutions.
Osmotic Pressure Calculator
Calculate osmotic pressure using the van't Hoff equation (π = iMRT). Convert between atm, kPa, mmHg, and psi.
Reaction Rate Calculator
Calculate reaction rate from rate constant, reactant concentrations, and reaction orders using the rate law equation.
Stoichiometry Calculator
Calculate product mass from reactant mass using molecular weights and mole ratios. Supports percent yield for practical lab calculations.
Titration Calculator
Calculate the equivalence point volume for acid-base titrations. Includes an interactive titration curve for strong acid-strong base reactions.
pH to [H⁺]
Hydronium molarity from pH at 25 °C (Kw = 10⁻¹⁴).