EMD PTE vs Electrochemistry

The EMD PSE App is the ultimate tool for every friend of chemistry – whether pupil or teacher, university student or professor, amateur or expert, hobbyist or technician. Our app is the must-have of digital periodic tables. Get informed with our mobile reference work, any time, with ease, offline and in detail, in the usual straightforward, user-friendly way. Download now free of charge and start experimenting.  New features in the latest version: - Additional translations: Chinese (simplified), Portuguese, and Russian. - Users can now change the language directly in the app - New function for direct comparison of two elements - A separate keypad for the molar mass calculator makes formulas easier to enter - Headline and breadcrumbs added for improved orientation - Filtering option and optimized usability for the ranking list of properties - Update of element master data - Update to current operating system versions - Improved touch support for diagrams - Museum mode All existing features: - All important information about the elements: atomic number, valence electrons, oxidation state, electronegativity according to Allred-Rochow and Pauling, atomic mass, boiling point, melting point, atomic radius, density, history, discoverer, classification, crystalline structure type, electron configuration, ionization energy, isotopic composition, state of matter, hardness according to Mohs, basic state, oxidation numbers, percentage of mass in Earth’s crust, year of discovery, half-life, and much more. - Visualized element properties: atomic radius, atomic radius graphic, electronegativity (according to Allred-Rochow and Pauling), ionization energy, relative atomic mass, state of matter, ranking list of properties, discovery, classifications. - Molar mass calculator: simple entry field for chemical formulas. Calculate molar mass simply and quickly. - Offline use. No Internet needed. All contents in one app.  - Streamlined handling of access rights. - Interactive operation: smart operating elements and numerous selection options. - Variety of languages: German, English, French and Spanish.

Electrochemistry is a tool for parameterization of oxidation-reduction reactions and electrochemical cells. The app helps to balance and combine a standard half-reactions into a single redox equation and to find the overall standard potential, equilibrium constant, standard free Gibbs energy and total voltage. The app includes redox reactions database, that automatically suggests and inserts reactions upon typing. Application Features: The calculation results are valid either for electrochemical cell or a single reaction solution. Initially, oxidation and reduction half-reactions are loaded into Anode (Oxidation) and Cathode (Reduction) parts respectively. The division can be done arbitrary, and may be easily changed (reversed) any time. The application includes redox reactions database. Upon typing into the leftmost field of any of a half reactions, list of the suggested equations will appear. It is preferable to start typing from the less common element to get a more specific suggestions. The suggestions are case sensitive! Both half reactions must be pre equilibrated stoichiometrically, as actually, they appear in standard tables. Importantly, same half-reaction may be equilibrated differently as a function of environment acidity. Application helps to find whether cell is galvanic and spontaneous or electrolytic. Voltage and potentials units are Volts only, Energy units are Joules, Temperature is in Kelvin only. Concentration units are adjusted by tapping the respective fields. If the compound is gas, then units should be set to "atm" and value should be adjusted appropriately. Solids and water are usually not taken into consideration for calculation of equilibrium constant, therefore they "concentration" fields must be left empty. The process can be easily reversed by changing oxidation and reduction reactions by pressing yellow button placed between anode and cathode parts. Long press on final reaction field copies equation to a clipboard for further usage. Compounds and their charges should be separated by comma for proper representation. The app is based on Nernst equation. Temperature value (in Kelvin) can be changed to meet custom conditions.