Carboxylic acids and esters are one of the most important classes of organic compounds. They are everywhere:* in food (citric acid; vinegar = a solution of acetic acid);* in medicines (aspirin = acetylsalicylic acid); * in fats (triglycerides are esters of fatty acids and glycerol);* in plastics (polyesters);* in biochemistry (transformation of pyruvate through the citric acid cycle);* and even in ants :) (formic acid)Learn structures and trivial names of 50 most important carboxylic acids and their esters and salts. Organic Chemistry Quiz:* Aliphatic saturated acids.* Unsaturated and substituted acids.* Di- and tricarboxylic acids.* Aromatic acids.* pKa values of all acids!Choose the game mode: * Spelling quizzes (easy and hard).* Multiple-choice questions (with 4 or 6 answer options).* Time game (give as many answers as you can in 1 minute).A learning tool:* Flashcards.The app is translated into 8 languages, including English, German, French, and many others. So you can learn the names of the carboxylic acids in any of them.