Featured chemistry tools
- Acid–base pH.
Solve acid–base pH for strong and weak acids and bases, plus strong acid–strong base mixtures.
- Acid-base titration curve & pH.
Compute pH during acid-base titrations and generate titration curves.
- Stoichiometry & limiting reactant.
Compute the limiting reactant, theoretical yield, remaining amounts, and percent yield from a balanced chemical.
- Chemical equilibrium ICE table (Kc/Kp).
Build ICE tables from Kc/Kp and initial conditions, solve the extent with a 5% small-x check, and share the setup.
- Beer-Lambert law & calibration curve.
Compute absorbance, concentration, molar absorptivity, path length, and calibration curves with Beer-Lambert steps.
How to use this field
A hub for chemistry calculations: pH, solutions, equilibria, and reactions.
Check assumptions (temperature, approximations, concentration definitions) before trusting results.
How to choose (3 steps)
- Pick what you want to solve (pH, concentration, moles, equilibrium, etc.).
- Confirm units and definitions (mol/L, mass %, ppm, etc.).
- Read the assumptions, then verify results with the step-by-step output when available.
Common goals
- Compute pH for acids and bases
- Convert concentrations and amounts
All chemistry tools
- Acid-base titration curve simulator.
Plot pH versus added volume for strong/weak acid-base systems, highlight key points, and export CSV or share URL.
- Buffer pH (Henderson-Hasselbalch).
Compute buffer pH with Henderson-Hasselbalch, design target-pH mixtures, and estimate acid/base addition effects.
- Catalyst loading (mol%, ppm, eq).
Convert catalyst loading between eq, mol% and ppm/ppb and compute mass, volume, or stock amounts from a base.
- Chemical Equation Balancer + Stoichiometry.
Balance reactions via nullspace Gauss-Jordan with transparent steps, then compute limiting reagent, theoretical.
- Colligative properties (ΔTb, ΔTf, π).
Compute boiling-point elevation, freezing-point depression and osmotic pressure, or estimate molar mass.
- Concentration & pH Calculator (Step-by-Step).
Covers molarity, mass percent, dilution, mixing, w/w→M, and strong/weak acid-base or buffer pH with 25 °C.
- Electrochemical cell & Nernst equation.
Explore standard cell potentials E°, ΔG°, K, Nernst equation E, and concentration cells with steps.
- Empirical & molecular formula.
Derive empirical and molecular formulas from composition, combustion, or hydrate data with step logs and CSV export.
- Limiting reagent & yield.
Balance reactions and compute limiting reagent, theoretical yield, percent yield, and sample purity with steps logs.
- Multistep yield planner.
Plan multistep syntheses, compute overall yield forward/backward, and highlight bottlenecks.
- Partial pressure & gas mixing.
Apply Dalton's law, two-tank mixing, and wet-gas corrections with step logs and optional van der Waals comparison.
- Reaction kinetics & half-life.
Analyse integrated rate laws, half-lives, 0th/1st/2nd order fits and Arrhenius plots for simple reaction kinetics.
- Reagent table & reaction scale.
Build reagent tables from a base amount, convert equiv/mol%/ppm to mmol, grams, and mL, then export or share.
- Significant Figures & Scientific Notation (with steps).
Count significant digits, normalize to scientific notation, and compare textbook vs final rounding for + − × ÷.
- Solubility product (Ksp) & precipitation.
Relate Ksp, molar solubility and ion concentrations, test Q vs Ksp for precipitation, and explore simple fractional.
- Solution preparation recipes.
Generate lab-ready recipes from solid reagents or stock solutions and design serial dilution series with steps.
- Target yield back-calculator.
Back-calculate base and reagent amounts from a target product mass with auto-balanced reactions.
Choose the chemistry page by the lab task
This hub works best when you map the problem to a lab workflow first. Start by asking whether you are balancing a reaction, preparing a solution, checking acid-base behavior, or estimating yield and stoichiometry.
Open these branches first
- Stoichiometry and balancing: reaction balance, limiting reagent, target yield, and molar relationships
- Solutions and concentration: molarity, dilution, recipes, and concentration conversion
- Acid-base and equilibrium: pH, buffers, titration, and equilibrium setup
- Lab planning: unit-heavy prep, catalyst loading, and practical recipe generation
When to leave this hub
Move to biology when the question is about assays, qPCR, growth, or wet-lab biology workflows. Move to earth science when the question is environmental monitoring rather than chemistry calculations.
FAQ
What should I identify first on this page?
Identify the lab task first: balancing, concentration prep, acid-base work, or yield planning. That gets you to the right calculator faster than scanning every chemistry link.
Why do chemistry pages sometimes give different-looking outputs?
They often solve different parts of the workflow. One page may balance a reaction while another converts units or prepares a stock solution, so compare purpose before comparing numbers.
Can I treat this hub as the calculation itself?
No. This page is the routing layer. Open the destination calculator for the actual inputs, steps, and interpretation.
Are these calculators enough for regulated lab decisions?
Use them for planning and education. For regulated work, validate methods, units, and assumptions with your lab SOPs and official references.