⌬ Chemistry

The toolkit

• Reaction workbenchAvailable

  Balance equations typed as formulas or names; redox analysis; ΔH°, ΔS°, ΔG° and K from standard data; a reagent table with limiting reagent, yields and atom economy, saved to your notebook; half-equation builder.

• Formula analyserAvailable

  Molar mass and composition, isotope pattern of the molecular ion, double-bond equivalents, oxidation states, compound data and hazards, empirical formulae from combustion analysis, and an HRMS formula finder.

• Solution preparationAvailable

  Mass to weigh (with purity and the concentration you actually made), diluting concentrated reagents from w/w % and density, calibration standards, serial dilutions and unit conversion.

• pH and titration labAvailable

  Exact pH of any mixture with species distribution, titration curves with equivalence points and indicator choice, a buffer designer that gives a recipe, and titration results with uncertainty.

• Equilibrium and thermodynamicsAvailable

  ICE tables for any stoichiometry, a Le Chatelier simulator, K ⇄ ΔG° ⇄ E°, van ’t Hoff and Kp ⇄ Kc.

• Kinetics analyserAvailable

  Order and rate constant from concentration–time data, orders from initial rates, activation energy from an Arrhenius plot, and consecutive reactions.

• ElectrochemistryAvailable

  Build cells from standard potentials (E°cell, anode and cathode, overall equation, ΔG°, K), the Nernst equation and electrolysis calculations.

• Gas lawsAvailable

  pV = nRT with any units, changes of conditions, real gases (van der Waals and compression factor), mixtures and molar mass from density.

• Spectroscopy assistantAvailable

  Match IR bands, ¹H and ¹³C NMR shifts, splitting and integration, mass spectrum fragments, Beer–Lambert and energy conversion.

• Lab data and uncertaintyAvailable

  Repeat measurements with confidence intervals and outlier tests, calibration curves with an unknown, LOD and LOQ, uncertainty propagation and reporting results.

• Periodic tableAvailable

  Every element with configuration and physical data, heat maps of ionisation energy, radius, electronegativity and more, trend charts and comparisons.

• COSHH assessmentsAvailable

  Choose substances and their GHS hazards fill in, with suggested controls, emergency actions, waste routes and a risk rating; saved and printable.

• Units and constantsAvailable

  Unit conversions and the physical constants chemists use.

• Mechanism cardsPlanned

  Reactions, conditions and arrow-pushing notes.