Colligative Properties & Electrochemistry Calculators
All colligative properties & electrochemistry calculators in one place.
Boiling Point Elevation Calculator
Calculate boiling point elevation (ΔTb = i × Kb × m), or solve backwards for molality, the van't Hoff factor, an unknown solvent's ebullioscopic constant, or an unknown solute's molar mass from measured lab data, with a solvent preset library and full step-by-step working.
Freezing Point Depression Calculator
Calculate freezing point depression (ΔTf = i × Kf × m), or solve backwards for molality, the van't Hoff factor, an unknown solvent's cryoscopic constant, or an unknown solute's molar mass from measured lab data, with a solvent preset library and full step-by-step working.
Osmotic Pressure Calculator
Calculate osmotic pressure using the van't Hoff equation (π = iMRT) from molarity or solute mass, choose from seven pressure units (atm, kPa, mmHg, torr, bar, psi, Pa), check tonicity against blood plasma, or work backwards from a measured osmotic pressure to find an unknown molar mass, with full step-by-step working.
Raoult's Law & Vapor Pressure Solver
Find vapor pressure lowering for a nonvolatile solute using Raoult's Law, or solve an ideal binary solution of two volatile liquids for the total and partial vapor pressures and vapor-phase composition, with a positive/negative deviation check against a measured pressure, and full step-by-step working.
van 't Hoff Factor Calculator
Calculate the ideal van't Hoff factor (i) from a solute's formula and percent dissociation, or back-calculate the real i from freezing point depression, boiling point elevation, osmotic pressure, or vapor pressure lowering data — plus an advanced tool for finding percent dissociation from a measured i, with full step-by-step working.
Clausius-Clapeyron Vapor Pressure
Solve the Clausius-Clapeyron equation to find a substance's enthalpy of vaporization from two vapor-pressure readings, predict its vapor pressure at a new temperature, or solve for the temperature — including the normal boiling point — at a target pressure, with full step-by-step working.
Nernst Equation Cell Potential
Calculate the non-standard cell potential (E) from E°, moles of electrons transferred (n), temperature, and the reaction quotient (Q), with a live concentration-to-Q builder, a standard reduction potential reference table, E vs log(Q) sensitivity chart, and full step-by-step working.
Standard Cell Potential Calculator
Coming soon: Standard Cell Potential Calculator.
Faraday's Law of Electrolysis
Find the mass deposited or liberated at an electrode, the time needed to electroplate a target mass, or the current efficiency of an electrolysis cell, using Faraday's Laws of Electrolysis, with a built-in library of common metals and gases and full step-by-step working.
Battery Specific Capacity Calculator
Find the theoretical specific capacity of an electrode material from Faraday's Law, calculate the measured specific capacity from real discharge test data with C-rate, or find specific energy and energy density, with a built-in library of common electrode materials and full step-by-step working.
Corrosion Rate Solver
Calculate metal corrosion rate from coupon weight-loss test data (ASTM G1) or from a measured corrosion current density (ASTM G102), with an automatic severity rating and results in mpy, mm/yr, µm/yr, and ipy — plus a Remaining Wall Thickness & Service Life mode that estimates years left before a pipe or tank drops below its minimum safe thickness, with full step-by-step working.
Ionic Conductivity & Molar Conductance
Find specific conductivity from a cell constant and measured resistance, convert it into molar or equivalent conductivity at a known concentration, or apply Kohlrausch's Law to find the limiting molar conductivity, degree of dissociation, and dissociation constant (Ka via Ostwald's Dilution Law) of a weak electrolyte — with built-in ion and electrolyte presets and full step-by-step working.
Cyclic Voltammetry Peak Current
Calculate the peak current of a reversible, diffusion-controlled redox reaction using the Randles-Ševčík equation, or solve backwards for the diffusion coefficient, bulk concentration, scan rate, or number of electrons transferred from a measured peak current, plus a reversibility checker for peak separation and the ipa/ipc ratio, with a live Randles-Ševčík plot and full step-by-step working.