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#### Rodomontano ChemDigit - Chemical Calculator

##### Features ChemDigiT is a chemical calculator. No approximations made. All calculated variables show their exact values. The algorithm used for calculations is based on a full set of equations describing acid/base and salt dissociation equlibrium solved with Newton–Raphson method. * pH Acid-Base Section * Find exact pH and equilibrium concentrations of all dissociated and undissociated species of any solution of strong/weak/polyprotic acid and base. Built-in database of over 60 weak acids and bases with pka and pkb editable tables * pH Hydrolysis Section * Find exact pH and equilibrium concentrations of all dissociated and undissociated species of any solution of salt. * pH Mixtures Section * Find exact pH and equilibrium concentrations of all dissociated and undissociated species of any mixture of two acids or two bases * Titration Section * Trace titration curve and find pH and volume of titrant added at equivalent points of any combination of strong/weak acid-base * Balance Section * Balance chemical equations (max 8 reagents and 8 products). If Weight or mole of one specie is entered, amounts of all reagents and products will be calculated. If more than one value is entered, then ChemDigiT checks if there is a limiting reagent. If so this value is used for the stoichiometric calculation. * Concentration Section * Calculate and convert concentration (molarity, molality, percent concentrations and molar fractions). All calculations will automatically take solution density into account. Built-in editable database of over 300 compounds with density tables Calculator for dilution and solution mixing calculations. * Buffer Section * Calculate A) buffer composition (acid and conjugated base concentration) or B) desired pH and total concentration. ChemDigiT doesn't use Henderson-Hasselbach equation, but exactly solves a sixth degree equation. Ionic Strength option to consider activities. Davies equation parameters editable. Calculate new pH after addition of strong acid/base. * Solubility Section * Calculate solubility, pH and Ionic Strength of any solution of poorly soluble strong electrolyte. Built-in editable database of over 120 compounds with Solubility Product Constants. Evaluate effects of Hydrolysis (Anion), pH and Ionic Strength on the Solubility

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