The chemistry lab bench
toolbox.
Balance an equation, find the limiting reagent, plot a titration curve and prepare solutions with the arithmetic shown.
Keep this toolbox for offline use
11 useful places to start.
Aqueous solutions at 25 °C unless stated. Check lab quantities against your own protocol and safety data sheets.
Limiting reagent and theoretical yield calculator
Balance a reaction, find the limiting reagent from masses or moles, and get the theoretical yield, leftover reactants and percent yield.
Acid-base titration curve calculator
Plot pH against titrant volume for strong or weak, mono- or polyprotic acids and bases from the exact charge balance, with equivalence points and an indicator.
Chemical equation balancer
Balance a chemical equation with the smallest whole-number coefficients, including ions.
Molar mass calculator
Find the molar mass, element-by-element composition and moles of a chemical formula.
Molarity calculator
Calculate concentration from solute amount and final solution volume.
Solution dilution calculator
Calculate stock volume for a target concentration and final volume.
pH, pOH & concentration
Relate pH, pOH and idealised hydronium/hydroxide concentrations using a stated pKw.
Weak acid buffer pH
Explore the Henderson–Hasselbalch model with a stated conjugate pair.
Serial dilution planner
Build a concentration table for equal-volume repeated dilution steps.
Reaction percentage yield
Compare actual product yield with a supplied theoretical yield.
Empirical formula calculator
Find the simplest whole-number formula from percentage composition or masses, and the molecular formula from a molar mass.
A few things you
can tick off.
- Find the limiting reagent and theoretical yield
- Plot a weak acid titration curve
- Make a serial dilution