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ACID - Wikipedia

ACID - Wikipedia

ACID - Wikipedia

ACID - Wikipedia

In computer science, ACID (atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee validity even in the event of errors, power failures, etc. In the context of databases, a sequence of database operations that satisfies the ACID properties (and these can be perceived as a single logical operation on the data) is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes suc...

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Acid - Wikipedia

Acid - Wikipedia

"Acidic" redirects here. For the band, see Acidic (band). An Acid is a molecule or ion capable of donating a proton (hydrogen ion H+) (a Brønsted–Lowry acid), or, alternatively, capable of forming a covalent bond with an electron pair (a Lewis acid).[1] The first category of acids are the proton donors, or Brønsted–Lowry acids. In the special case of aqueous solutions, proton donors form the hydronium ion H3O+ and are known as Arrhenius acids. Brønsted and Lowry generalized the Arrhenius theory...

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Acid (disambiguation) - Wikipedia

Acid (disambiguation) - Wikipedia

Look up acid, ACID, or àcid in Wiktionary, the free dictionary. An acid is any chemical compound that, when dissolved in water, gives a solution with a pH of less than 7.0. Acid or ACID may also refer to: Science[edit] Corrosive substance, commonly (though imprecisely) referred to as an acid Lysergic acid diethylamide (LSD), a semisynthetic, psychedelic drug, is commonly referred to as acid Computing[edit] ACID (atomicity, consistency, isolation, durability), an initialism for the transactional...

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Ion - Wikipedia

Ion - Wikipedia

An ion ()[1] is an atom or molecule that has a net electrical charge. Since the charge of the electron (considered negative by convention) is equal and opposite to that of the proton (considered positive by convention), the net charge of an ion is non-zero due to its total number of electrons being unequal to its total number of protons. A cation is a positively charged ion, with fewer electrons than protons, while an anion is negatively charged, with more electrons than protons. Because of the...

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Magic acid - Wikipedia

Magic acid - Wikipedia

Magic acid (FSO3H·SbF5) is a superacid consisting of a mixture, most commonly in a 1:1 molar ratio, of fluorosulfuric acid (HSO3F) and antimony pentafluoride (SbF5). This conjugate Brønsted–Lewis superacid system was developed in the 1960s by the George Olah lab at Case Western Reserve University, and has been used to stabilize carbocations and hypercoordinated carbonium ions in liquid media. Magic acid and other superacids are also used to catalyze isomerization of saturated hydrocarbons, and ...

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Hydronium - Wikipedia

Hydronium - Wikipedia

In chemistry, hydronium is the common name for the aqueous cation H3O+, the type of oxonium ion produced by protonation of water. It is the positive ion present when an Arrhenius acid is dissolved in water, as Arrhenius acid molecules in solution give up a proton (a positive hydrogen ion, H+) to the surrounding water molecules (H2O). Determination of pH[edit] The concentration of hydronium ions determines a solution's pH. The concentration of hydroxide ions determines a solution's pOH. The mole...

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Covalent bond - Wikipedia

Covalent bond - Wikipedia

A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.[1][2] For many molecules, the sharing of electrons allows each atom to attain the equivalent of a full outer shell, corresponding to a stable electronic configuration. In organic ...

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