General chemistry
Balancing equations, stoichiometry, pH and yields, with the calculation steps.
- Buffer pH calculator, Henderson-Hasselbalch equationBuffer pH, base/acid ratio for a target pH, and the amounts to weigh for a given volume, with the buffer zone checked.
- Chemical equation balancerExact balancing of a chemical equation by linear algebra over exact fractions, with the element-by-element check shown.
- Limiting reactant calculator (limiting reagent), stoichiometryLimiting reactant, masses of products formed and leftovers, from an equation balanced along the way.
- Percent yield calculator: reaction yield and sample purityPercent yield in its three directions (actual vs theoretical), sample purity, molar mass and conversion into moles.
- pH calculator, acids and basesExact pH of strong and weak acids and bases, water autoionisation included, with the gap to the textbook approximation.