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Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life.
This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.
As 2 O 5: arsenic pentoxide: 1303-28-2 As 2 S 4: arsenic tetrasulfide: 1303-32-8 As 2 S 5: arsenic pentasulfide: 1303-34-0 As 2 Se: arsenic hemiselenide: 1303-35-1 As 2 Se 3: arsenic triselenide: 1303-36-2 As 2 Se 5: arsenic pentaselenide: 1303-37-3 As 3 O 4: arsenic tetraoxide: 83527-53-1 As 3 P: arsenic(III) phosphide: 12512-11-7 As 4 O 3 ...
Chemical nomenclature, replete as it is with compounds with very complex names, is a repository for some names that may be considered unusual. A browse through the Physical Constants of Organic Compounds in the CRC Handbook of Chemistry and Physics (a fundamental resource) will reveal not just the whimsical work of chemists, but the sometimes peculiar compound names that occur as the ...
Chemistry, Biophysics: Ole Lamm: Langmuir equation: Surface Chemistry: Irving Langmuir: Laplace transform Laplace's equation Laplace operator Laplace distribution Laplace invariant Laplace expansion Laplace principle Laplace limit See also: List of things named after Pierre-Simon Laplace: Mathematics Physics Probability Theory Statistical ...
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
The letter "Q" is reserved for "heat" in a chemical reaction. "Y" is also often used as a general chemical symbol, though it is also the symbol of yttrium. "Z" is also often used as a general variable group. "E" is used in organic chemistry to denote an electron-withdrawing group or an electrophile; similarly "Nu" denotes a nucleophile.