Chemistry and Reaction Engineering Simulators

Visualize gas absorption design with NTU/HTU method. Plot operating & equilibrium lines, calculate column height and NTU via graphical integration.

Calculate pH, [H+], [OH-] and pOH for strong acids, weak acids, buffers and bases. Combines Henderson-Hasselbalch with the exact quadratic solution.

Adiabatic Flame Temperature Simulator: Compute the theoretical upper-limit temperature (adiabatic flame temperature T_ad) reached when a fuel burns in air. V…

Adiabatic Reactor Temperature Rise Simulator: Find out how hot the reaction mixture gets when an exothermic reaction runs without releasing any heat to its s…

Adsorption Breakthrough Curve Simulator: When a fluid flows through a fixed bed packed with activated carbon or zeolite, this tool shows when the solute appe…

Algae Photobioreactor Productivity Simulator: Compare the specific growth rate, annual biomass, lipid yield, CO₂ fixation and CAPEX of major microalgae — Chl…

Antoine vapor pressure simulator for computing saturation pressure across temperature ranges using Antoine equation coefficients.

Axial Dispersion Reactor Model Simulator: A real tubular reactor operates exactly between an ideal plug-flow reactor (PFR) and a perfectly mixed tank (CSTR).…

A process-design tool for fast pyrolysis, the high-heating-rate (>100 K/s), short-residence (<2 s) thermochemical conversion that turns wood, agricultural residues or mi…

Design the operating point of a stirred-tank bioreactor used in monoclonal-antibody (mAb) production.

Calculate cathodic protection current, sacrificial anode mass, and service life for ICCP/SACP systems. Free design calculator with formulas and real-time plotting.

Visualize chemical equilibrium and Le Chatelier's principle with interactive charts. Explore real-time concentration shifts and calculations.

Simulate 1st/2nd order, reversible & consecutive chemical reaction kinetics in real-time. Automatically compute rate constants and equilibrium concentrations.

Use the Van Deemter equation to separate eddy diffusion, longitudinal diffusion, and mass-transfer effects on plate height.

Clausius-Clapeyron Vapor Pressure Simulator: Given a reference point (T₁, P₁) and the enthalpy of vaporisation ΔH_vap, the Clausius-Clapeyron equation predic…

Calculate adiabatic flame temperature, emissions, and combustion products. Set fuel, equivalence ratio, and inlet conditions for precise results.

Calculate flue gas composition and adiabatic flame temperature for any fuel. Interactive tool for combustion analysis and stoichiometry.

Calculate stoichiometric air-fuel ratios and flue gas composition instantly. Select your fuel and excess air factor for complete combustion analysis.

Combustion Calculator compares how environmental or chemical-process balance and operating margin shifts as the main assumptions change.

Compare exit concentration, conversion and required volume of CSTR vs PFR for a first-order reaction A to B in real time using flow rate, volume and rate constant.

Explore the dimensionless number that governs chemical-reactor performance — the Damköhler number Da.

Simulate 1D Fickian diffusion with concentration decay, flux index, and diffusion length analysis. Learn FICK Second Law fundamentals.

Compute concentration profiles with Fick's diffusion law and explore temperature effects via the Arrhenius model. A precise simulator for material science.

Calculate theoretical stages and reflux ratio for binary distillation using the McCabe-Thiele method. Visualize VLE curves and operating lines in real time.

Estimate McCabe-Thiele style stage count and separation margin from relative volatility, distillate composition, bottoms composition, and reflux ratio.

Design an ethanol-water distillation column using the McCabe-Thiele method. Adjust feed, purity, and reflux to visualize equilibrium and stage construction.

Thin-Layer Drying Page Model Simulator: Predict thin-layer drying of rice, wheat, apple slices, coffee beans and other foods and agricultural products with t…

Calculate electroplating, water electrolysis, and electrorefining using Faraday's Law. Compute deposited mass, film thickness, current density, and energy consumption instantly.'s Law for mass, thickness, current density & more. Fast, accurate tool.

Calculate metal deposition mass, film thickness, and power consumption from current, time, and electrode area using Faraday's laws in real time.

Electroplating calculator simulator. Input metal type, current density, area, and time to compute thickness, deposited mass, and power consumption in real time based on Faraday's law. Supports Ni/Cu/Cr/Au/Zn. Visualizes the relationship between plating time and thickness.

Calculate mixing entropy for three-component ideal gas mixtures with entropy change, Gibbs free energy, and ternary phase diagrams.

Learn flash distillation (equilibrium distillation): a feed liquid is partially vaporized inside a flash drum and the equilibrium vapor and liquid are drawn off separate…

Ideal Gas Laws Simulator: Adjust temperature, volume, and moles to calculate pressure in real time using the ideal gas law. Experience Boyle's, Charles's, an…'s and Charles's laws to heat engine analysis.

Gibbs free energy simulator: real-time Delta G = Delta H - T Delta S with spontaneity flag and equilibrium constant K = exp(-Delta G / RT). Delta G-T plot and van't Hoff line included.

Calculate fuel heating values (LHV/HHV), thermal efficiency, SFC, and CO₂ emissions for engines and boilers with this comprehensive online tool.

Henderson-Hasselbalch simulator: real-time buffer pH from pKa, total concentration, and conjugate-base fraction. Plots titration curve, fractions, and Van Slyke buffer capacity.

Calculate how much gas dissolves in water using Henry's law.

Enter standard enthalpies of formation to compute reaction enthalpy ΔH°. Visualize the energy level diagram in real time.

Interactive Langmuir adsorption isotherm simulator. Compute coverage θ = Kp/(1+Kp) and temperature-dependent K(T) in real time. Visualize Henry, transition and saturation regimes.

Langmuir-Hinshelwood Surface Reaction Kinetics Simulator: Visualise the Langmuir-Hinshelwood mechanism, in which reactants A and B compete for the same adsor…

Design the liquid-liquid extraction that transfers a dissolved solute into a second, immiscible solvent.

Set diffusion coefficient, slab thickness, and boundary conditions to visualize the time evolution of concentration profiles.

Calculate mixing time, power draw, Reynolds number, and CSTR conversion in real time. Set impeller type, speed, and fluid properties for your stirred tank reactor.

Interactive molarity calculator and dilution simulator. Visualize C₁V₁=C₂V₂ dilution law with animated beakers. Perfect for high school and university chemistry.

Simulate molecular dynamics with N particles using the Lennard-Jones potential. Adjust temperature to observe gas, liquid, and solid phases in real-time.

Multiple-Effect Evaporator Simulator: Design a multiple-effect evaporator: evaporator bodies in series, where the vapour from each one reheats the next. Chan…

Compute electrode potential with the Nernst equation E = E0 - (RT/nF) ln(Q). Vary E0, temperature, concentration and electron count to see EMF shifts live.

Organic Molecule Structure Viewer: Explore structural formulas, functional groups, boiling points, and solubility for major organic molecules. Visualize stru…

Osmotic Pressure Simulator: Calculate osmotic pressure in real time using π = icRT. Adjust concentration, temperature, and van't Hoff factor to see how the U…'t Hoff equation π=icRT. Adjust concentration, temperature, and dissociation factor to observe U-tube water column height in real time. Covers blood, seawater, and reverse osmosis.

Explore atomic radius, ionization energy, electronegativity, and electron affinity as color-coded heatmaps. Click any element to view its data.

Gibbs phase rule calculator for computing degrees of freedom in phase equilibria. Simulate F = C - P + 2 - N with real-time phase diagram visualization and univariant analysis.

Calculate protein properties instantly: net charge, hydrodynamic radius, diffusion coefficient, sedimentation, and SDS-PAGE band estimation.

Calculate pyrolysis kinetics for wood, polymers, coal & more. Compute Arrhenius constants, TGA profiles, and conversion curves in real time.

Create Turing patterns like spots & stripes in real time with the Gray-Scott model simulator. Adjust parameters and explore the reaction-diffusion equations.

Plot reaction kinetics in real time. Visualize concentration decay, half-life, and the effect of activation energy using the Arrhenius equation.

Calculate rate constants using the Arrhenius equation and visualize how temperature and activation energy affect reaction rates.

Reaction Selectivity Simulator: A reactor-design tool for making the desired product efficiently. Switch between parallel and series reactions and adjust the…

Compare CSTR and PFR reactor volumes instantly. Input kinetics, conversion, and flow to see Levenspiel plots and design equations.

Residence Time Distribution (RTD) Simulator: Compute the residence time distribution E(t) that describes how long fluid elements stay inside a flow reactor. …

Model a semi-batch reactor in which reactant B is charged at the start and reactant A is dosed in slowly during the run.

A tool to calculate the amount of air "just sufficient" to fully burn a hydrocarbon fuel C x H y O z .

Inside a porous catalyst pellet, reaction and diffusion compete with each other.

Acid-Base Titration Simulator: Select strong acid, weak acid, or strong base combinations and adjust concentration and pKa to draw titration curves in real t…

Simulate Turing patterns like leopard spots & zebra stripes. Adjust feed & kill rates in the Gray-Scott model to explore self-organizing chemical reactions.

When an ideal binary mixture is in equilibrium between its liquid and its vapour, what composition does each phase have and at what temperature?