(of acids or bases)

См. также в других словарях:

• Lewis acids and bases — A Lewis acid is a chemical compound, A, that can accept a pair of electrons from a Lewis base, B, that acts as an electron pair donor, forming an adduct, AB. :A + :B rarr; A B Gilbert N. Lewis proposed this definition, which is based on chemical… …   Wikipedia

• pKa's of representative acids and bases — ▪ Table pKa s of representative acids and bases pKa Inorganic acids boric acid 9.1 (20 °C) hypochlorous acid 7.53 (18 °C) hydrogen sulfide 7.0, 11.9 (18 °C) carbonic acid 6.4, 10.3 phosphoric acid 2.1, 7.2, 12.8 sulfurous acid 1.8, 6.9 (18 °C)… …   Universalium

• acids — ac·id || æsɪd n. any of a group of sour tasting substances that dissolve in water and form salts when combined with bases (Chemistry); substance having a sour taste; acerbity, sarcasm; LSD (Slang) adj. of or pertaining to an acid (Chemistry);… …   English contemporary dictionary

• ACIDES ET BASES — Très longtemps intuitives, les notions d’acidité et de basicité ont échappé à une définition simple et générale. Déjà, en 1786, Guyton de Morveau écrivait dans son Encyclopédie de la chimie : «Rien de plus embarrassant que de former une juste… …   Encyclopédie Universelle

• Nuclear magnetic resonance spectroscopy of nucleic acids — Nuclear magnetic resonance spectroscopy of nucleic acids, often referred to as nucleic acid NMR, is the use of nuclear magnetic resonance spectroscopy to obtain information about the structure and dynamics of nucleic acid molecules, such as DNA… …   Wikipedia

• purine bases — a group of chemical compounds of which purine is the base, including 6 oxypurine (hypoxanthine); 2,6 dioxypurine (xanthine); 6 aminopurine (adenine); 2 amino 6 oxypurine (guanine); 2,6,8 trioxypurine (uric acid); and 3,7 dimethyl xanthine… …   Medical dictionary

• oxygen acids — Acid Ac id, n. 1. A sour substance. [1913 Webster] 2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also… …   The Collaborative International Dictionary of English

• selenium acids — Acid Ac id, n. 1. A sour substance. [1913 Webster] 2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also… …   The Collaborative International Dictionary of English

• sulphur acids — Acid Ac id, n. 1. A sour substance. [1913 Webster] 2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also… …   The Collaborative International Dictionary of English

• tellurium acids — Acid Ac id, n. 1. A sour substance. [1913 Webster] 2. (Chem.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also… …   The Collaborative International Dictionary of English

• nucleic acids — Linear polymers of nucleotides, linked by 3 ,5 phosphodiester linkages. In DNA, deoxyribonucleic acid, the sugar group is deoxyribose, and the bases of the nucleotides adenine, guanine, thymine and cytosine. RNA, ribonucleic acid, has ribose as… …   Dictionary of molecular biology