hydroxide ion


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hydroxide ion

n.
The ion OH-, characteristic of basic hydroxides. Also called hydroxyl ion.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun1.hydroxide ion - the anion OH having one oxygen and one hydrogen atom
anion - a negatively charged ion
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References in periodicals archive ?
This acidic electrolyzed water can be raised in pH by mixing in the desired amount of hydroxide ion solution from the cathode compartment, yielding a solution of hypochlorous acid and sodium hydroxide, efficient disinfecting agents.
At pH-9.0 bis-p-MPPE also reacts with hydroxide ion (Bruice et al., 1968) and therefore by appropriate choice of a substrate it is possible to examine the micellar effects upon the mechanism of bis-p-methoxyphenyl phosphate ester hydrolysis (Scheme 1).
'Simply put, chemically, triclosan structure consists of a dichlorobenzene ring attached to oxygen, which is attached to another benzene ring with a chloro and hydroxide ion attached.
The [Ni[([N.sub.2][H.sub.4]).sub.3]][Cl.sub.2] complex can exchange the chloride ion with the hydroxide ion to form nickel hydroxide nanoparticles, as seen in the following [18]:
The negative end of the water dipole is attracted to the positive hydrogen ion in water, and the positive end of the water dipole is attracted to the negative hydroxide ion.
In alkaline medium containing sodium hydroxide, for example [Na.sup.+] [OH.sup.-], the hydroxide ion ([OH.sup.-]) combines with the [H.sup.+] ion detached from the amino acid residue, forming water ([H.sub.2]O), leaving the [Na.sup.+] ion as a replacement for the original [H.sup.+] ion.
The electrode is selective for fluoride ion over other common anions by several orders of magnitude; only the hydroxide ion (OH-) appears to have serious interference.
APPLICATION: The concentrations of hydroxide ion and hydrogen sulfide ion in a birch kraft cook have an impact on the results of ECF bleaching.
The hydroxide ion acts as an accelerator for the reaction.
The back migration and diffusion of the hydroxide ion may lead to premature precipitatio of cations transported in this region.
In addition, the experimental results also showed that the higher the hydroxide ion, the greater the erosion rate.
ACID/BASE HYDROLYSIS Acetate hydrolysis C An acetate ion removes a [H.sub.3]COO (aq) + proton from a water [H.sub.2]0 [right arrow] molecule, with some C[H.sub.3]COOH(aq) + OH difficulty, to form an (aq) acetic acid molecule and a hydroxide ion. Dissociation of acetic An acetic acid molecule acid C [H.sub.3]COOH(aq) + donates a proton to a [H.sub.2]0 [right arrow] water molecule, with some C[H.sub.3]COO (aq) + difficulty, to form an [H.sub.3]0+(aq) acetate ion and a hydronium ion.