Acids are made up of at least one hydrogen atom. Some examples of acid include inorganic substances known as mineral acids, which are sulfuric, nitric, hydrochloric and phosphoric acids. Acid is also made up of organic compounds belonging to the carboxylic acid, sulfonic acid and phenol groups.
According to Encyclopedia Britannica, factors that identify an acid are a substance tasting sour in a water solution or changing the color of certain indicators, such as turning blue litmus paper red. Some substances that are acids, such as iron, react with metals to liberate hyrdrogen, react with bases to form salts or promote chemical reactions called acid catalysis.Learn More
Several carboxylic acids exist with different pKa values. The simplest carboxylic acid, acetic acid, has a pKa value of 4.7. A carboxylic acid is an organic compound containing the functional group COOH. Additional carboxylic acids include benzoic and formic, with pKa values of 4.2 and 3.7, respectively.Full Answer >
Another name for the Krebs cycle is the citric acid cycle. The Krebs cycle is also referred to as the tricarboxylic acid cycle.Full Answer >
The pH of a solution measures the amount of hydrogen ions that are in a solution. The term "pH" literally means "the power of hydrogen." The pH of a substance tells how acidic or basic a substance is.Full Answer >
The pH level of a substance describes how acidic or basic it is. Substances with a higher pH level are more basic, while substances with a lower pH level are more acidic. A substance with a pH of 7 is considered neutral, neither acidic nor basic.Full Answer >