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Topics related to "acidity"

oxalic acid
oxalic acid or ethanedioic acid , HO 2 CCO 2 H, a colorless, crystalline organic carboxylic acid that melts at 189°C with sublimation. Oxalic acid and oxalate salts are poisonous. Oxalic acid is found in many plants, e.g., sorrel and rhubarb, usually as its calcium or potassium salts. Oxalic... Read more
fatty acid
fatty acid any of the organic carboxylic acids present in fats and oils as esters of glycerol . Molecular weights of fatty acids vary over a wide range. The carbon skeleton of any fatty acid is unbranched. Some fatty acids are saturated, i.e., each carbon atom is connected to its carbon atom nei... Read more
fumaric acid
fumaric acid or trans -butenedioic acid, HO 2 CCH[symbol]CHCO 2 H, unsaturated dicarboxylic acid that melts at 287°C. Maleic acid, or cis -butenedioic acid, is a geometric isomer of fumaric acid; it melts at about 140°C. Of the two isomers fumaric acid is the more stable and can be ... Read more
gallic acid
gallic acid or 3,4,5-trihydroxybenzoic acid , C 6 H 2 (OH) 3 CO 2 H, colorless crystalline organic acid found in gallnuts, sumach, tea leaves, oak bark, and many other plants, both in its free state and as part of the tannin molecule (see tannin ). Since gallic acid has hydroxyl groups and a ca... Read more
carbonic acid
carbonic acid H 2 CO 3 , a weak dibasic acid (see acids and bases ) formed when carbon dioxide dissolves in water; it exists only in solution. Carbonic acid forms carbonate and bicarbonate (or acid carbonate) salts (see carbonate ) by reaction with bases. It contributes to the sharp taste of ca... Read more
glutamic acid
glutamic acid , organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l -stereoisomer occurs in mammalian proteins. Like aspartic acid , glutamic acid has an acidic carboxyl group on its side chain which can serve as both an acceptor and a donor of ammonia, a ... Read more
butyric acid
butyric acid or butanoic acid , CH 3 CH 2 CH 2 CO 2 H, viscous, foul-smelling, liquid carboxylic acid; m.p. about -5°C; b.p. 163.5°C. It is miscible with water, ethanol, and ether. It is a low molecular weight fatty acid that is present in butter as an ester of glycerol; the odor of ra... Read more
formic acid
formic acid or methanoic acid , HCO 2 H, a colorless, corrosive liquid with a sharp odor; it boils at 100.7°C and solidifies at 8.4°C. It has the lowest molecular weight and is the simplest of the carboxylic acids. Functionally, it is both an acid and an aldehyde. Like other acids, it re... Read more
boric acid
boric acid any one of the three chemical compounds, orthoboric (or boracic) acid, metaboric acid, and tetraboric (or pyroboric) acid; the term often refers simply to orthoboric acid. The acids may be thought of as hydrates of boric oxide, B 2 O 3 . Orthoboric acid, H 3 BO 3 or B 2 O 3 ·3H 2... Read more
phosphoric acid
phosphoric acid any one of three chemical compounds made up of phosphorus , oxygen, and hydrogen (see acids and bases ). The most common, orthophosphoric acid, H 3 PO 4 , is usually simply called phosphoric acid. Two molecules of it are formed by adding three molecules of water, H 2 O, to one mol... Read more

Encyclopedia entries related to "acidity"

acid rain
Book article from: The Oxford Companion to the Earth ...identified were a rapid increase in the acidity of European rainfall, a parallel increase in the acidity of Swedish rivers and lakes, a decline...natural and polluting substances have on the acidity of rainfall it is essential to start with...
Acid rain
Encyclopedia entry from: The Gale Encyclopedia of Science ...the most important in terms of causing acidity in soil and surface waters (such as lakes...populations of some plants and animals. The acidity of an aqueous solution is measured as...is now affected. Interestingly, the acidity of precipitation is not usually greater...
Acid Rain
Encyclopedia entry from: UXL Encyclopedia of Science ...An increase over time in the content of acidity in a system, accompanied by a decrease...indirectly, as a result of chemical changes. Acidity: The quality, state, or degree of being acidic. Acidity is usually measured as the concentration...
fatigue
Book article from: The Oxford Companion to the Body ...and it is normally considered to be the acidity of this which stops muscles working...any other form of activity. Degrees of acidity are expressed scientifically in terms of ph units, lower values indicating greater acidity. The pH within resting muscle cells is...
Renal Tubular Acidosis
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed. ...your breath does the opposite. Blood acidity from carbon dioxide controls the rate...defect. Distal RTA results in high blood acidity and low blood potassium levels. Symptoms...Proximal RTA also results in high blood acidity and low blood potassium levels. Symptoms...
breathing during exercise
Book article from: The Oxford Companion to the Body ...x2014; the defence of blood and tissue acidity. The exercise-induced challenge to the body's acidity levels has two different origins. Firstly...dioxide would increase blood and tissue acidity. The body's acidity is determined by...
Agrochemicals
Encyclopedia entry from: The Gale Encyclopedia of Science ...oyster or mussel shells. Alternatively, soil acidity may be neutralized using faster-acting lime...acre per year. The rates used depend on the acidity of the soil, the rate at which new acidity is generated, and the needs of specific crops...
carbon dioxide
Book article from: The Oxford Companion to the Body ...dioxide is blown off in the lungs and the acidity of the blood and brain are kept close...regulated primarily to keep blood and brain acidity at healthy values. If the carbon dioxide...pronounced reduction in blood and CSF acidity. Since decreases in carbon dioxide and...
Esophageal Function Tests
Encyclopedia entry from: Gale Encyclopedia of Surgery: A Guide for Patients and Caregivers ...monitoring. This test measures changes in the acidity of the esophagus, and is valuable for...been designed to monitor the level of acidity over a 24-hour period, usually in the...in the esophagus to record changes in acidity. After the study, a computer is used...
Fluoride
Encyclopedia entry from: Encyclopedia of Food and Culture ...environment at the tooth surface. The acidity dissolves hydroxyapatite, releasing positively...When normal saliva flow dilutes the acidity, the positive and negative ions recombine...stronger. A much greater increase in acidity is then necessary before a destructive...

Dictionary entries related to "acidity"

acidity
Book article from: A Dictionary of Nursing acidity (ă- sid -iti) n. the state of being acid. The degree of acidity of a solution is measured on the pH scale (see pH ).
acidity regulators
Book article from: A Dictionary of Food and Nutrition acidity regulators See buffers .
Acid Rain
Dictionary entry from: Dictionary of American History ...ACID RAIN ACID RAIN, precipitation whose acidity has increased on account of some human...but industrial pollutants may raise the acidity of a region's precipitation more than...the Northeast and the Midwest, but that acidity levels had not fallen along with them...
acid soil
Book article from: A Dictionary of Plant Sciences ...acid soil A soil having a pH less than 7.0. Degrees of soil acidity are recognized. Soil is regarded as ‘very acid...than pH 5.0. The USDA lists five standard ranges of soil acidity (less than pH 4.5, extremely acid; 4.5–5...
pH
Book article from: A Dictionary of Nursing pH n. a measure of the concentration of hydrogen ions in a solution, and therefore of its acidity or alkalinity. A pH of 7 indicates a neutral solution, a pH below 7 indicates acidity, and a pH in excess of 7 indicates alkalinity.
carotid body
Book article from: A Dictionary of Biology ...Each contains receptors that are sensitive to oxygen and pH levels (acidity) in the blood. High levels of carbon dioxide in the blood lower the pH (i.e. increase the acidity). By responding to fluctuations in pH, the carotid body coordinates...
Bassi, Agostino Maria
Dictionary entry from: Complete Dictionary of Scientific Biography ...were responsible, he maltreated the worms in many ways; they died, but not of the muscardine. Then, suspecting excessive acidity to be the cause, he used phosphoric acid, but was unsuccessful in producing the disease. When Bassi obtained worms that...
Cohn, Lassar
Dictionary entry from: Complete Dictionary of Scientific Biography ...that the waste matter, instead of polluting rivers, could be made beneficialk to crops. After chemical treatment to reduce acidity, it could be pumped into canals and thence to irrigated fields. Cohn was a successful writer of popular books on chemistry...
Harcourt, A. G. Vernon
Dictionary entry from: Complete Dictionary of Scientific Biography ...gave a disproportionate increase at lower acidities. For some unknown reason, their further experimental studies of this acidity effect were not published until Harcourt ’ s 1895 Bakerian lecture, in which they also reported Esson ’...
Heyrovský, Jaroslav
Dictionary entry from: Complete Dictionary of Scientific Biography ...habilitation thesis, which qualified him in 1920 to become a docent in physical chemistry, dealt with the constitution and acidity of aluminic acid. There papers summarizing his work on the electrochemical properties of aluminum (1920) brought him the...

Thesaurus entries related to "acidity"

keenness
Book article from: The Oxford Pocket Thesaurus of Current English ...brightness, intelligence, canniness. See keen adjective 3.   4. the keenness of her wit synonyms : acerbity, acidity, causticity, tartness, mordancy, trenchancy, incisiveness, sardonicism, satire. See keen adjective 4.   5...
edge
Book article from: The Oxford Pocket Thesaurus of Current English ...xA0; 2. a voice with an edge synonyms : sting, bite; sharpness, severity, pointedness, acerbity, causticity, acidity, acrimony, virulence, trenchancy, pungency.   3. have the edge on her synonyms : advantage, upper hand, lead...
inverse
Book article from: The Oxford American Writers Thesaurus inverse • adjective  inverse snobbery. See reverse adjective sense 2. • noun  alkalinity is the inverse of acidity. See opposite noun .
bitterness
Book article from: The Oxford Pocket Thesaurus of Current English bitterness • noun   1. the bitterness of the medicine synonyms : acidity, pungency, acridity, tartness, sourness, vinegariness, acerbity. See bitter 1.   2. the bitterness of the old...
indigestion
Book article from: The Oxford Pocket Thesaurus of Current English indigestion • noun   synonyms : dyspepsia, hyperacidity, acidity, heartburn, pyrosis; upset stomach, stomach ache; inf. tummy ache.
acrimony
Book article from: The Oxford Pocket Thesaurus of Current English acrimony • noun   synonyms : bitterness, sarcasm, harshness, sharpness, acidity, acerbity, virulence, trenchancy, stringency, spitefulness, crabbedness, irascibility.

Related newspaper, magazine, and trade journal articles from HighBeam Research

The measurement of actual acidity in acid sulfate soils and the determination of sulfidic acidity in suspension after peroxide oxidation.
Magazine article from: Australian Journal of Soil Research; 12/1/2002; ; 700+ words ; ...Introduction The characterisation of soil acidity is a complex task. The most common index for soil acidity is pH. However, pH gives no indication...complicated by the fact that they contain latent acidity in the form of pyrite (or other iron sulfides...
Acidity and DAG Content of Olive Oils Recently Produced on the Island of Mallorca
Magazine article from: JAOCS, Journal of the American Oil Chemists' Society; 11/1/2008; ; 700+ words ; ...quality characteristics, i.e., the acidity and acylglycerols, of currently produced...content was higher in oil with higher acidity, but the maximal DAG content was only about 10 with 30% acidity, and the primary isomer found in Mallorcan...
Assessment of peroxide oxidation for acid sulfate soil analysis. 2. Acidity determination.(Statistical Data Included)
Magazine article from: Australian Journal of Soil Research; 5/1/2002; ; 700+ words ; ...an accurate and reliable measure of the acidity of ASS materials to identify their environmental...hydrogen peroxide and measurement of the acidity produced is commonly used to determine...of any pyrite present, with 4 moles of acidity ([H.sup.+]) theoretically liberated...
Acidity of Oryzanol and Its Contribution to Free Fatty Acids Value in Vegetable Oils
Magazine article from: JAOCS, Journal of the American Oil Chemists' Society; 12/1/2006; ; 700+ words ; ...titration of purified oryzanol showed an acidity of 42.5% expressed as FFA. In spectroscopic...indicator correction factors for oryzanol's acidity and a formula for calculating real FFA...1005 (December 2006). KEY WORDS: Acidity of oryzanol, free fatty acids value...
HUSBAND'S ACIDITY THEORY IS ALL WET
Newspaper article from: Beacon News, The (Aurora, IL); 11/6/2000; 682 words ; ...question, let me address the larger issue of body acidity. The balance of body acidity and alkalinity is meticulously regulated by many...exhaled in precise amounts to maintain the proper acidity of body tissues. When excess carbon dioxide builds...
Technical Note: Determination of Acidity in Whole Raw Milk: Comparison of Results Obtained by Two Different Analytical Methods
Magazine article from: Journal of Dairy Science; 3/1/2006; ; 700+ words ; ...method is usually carried out to determine acidity in whole raw milk: the Instituto Nacional...methods was determined. Key words: acidity, milk, methodology INTRODUCTION What is usually known as milk acidity is the result of titration (Alais...
Acidity Therapy Area Pipeline Report.
M2 Presswire; 6/11/2009; 700+ words ; ...11 June 2009-Research and Markets: Acidity Therapy Area Pipeline Report(C)1994...researchandmarkets.com/research/9434e3/acidity_therapy_ar) has announced the addition of the "Acidity Therapy Area Pipeline Report" report to...
Delicate balance: Acidity -- too much or too little -- can wreak havoc
Newspaper article from: Chicago Sun-Times; 2/28/2007; ; 700+ words ; ...potatoes from swelling and softening. The acidity from the tomatoes in the restaurant side...confuse matters, not only does too much acidity prevent starchy foods from cooking through, too little acidity can also prevent it. For example, proteins...
Canada : Carbon emissions, carbon-rich ocean waters drive up ocean acidity .
News Wire article from: TendersInfo; 5/24/2008; 700+ words ; ...carbon-rich waters are driving up the acidity of the shallow ocean just off the West...Express, for the first time documents high acidity in the shallow nearshore waters of the...acidification, which has tied increasing acidity levels to the ocean's absorption of...
Title: "Digestive System - Acidity Drug Pipeline Report" Contains Detailed Information On The Current Drug Pipeline.
M2 Presswire; 9/19/2007; 700+ words ; ...Markets: Title: "Digestive System - Acidity Drug Pipeline Report" Contains Detailed...19092007 Title: "Digestive System - Acidity Drug Pipeline Report" Contains Detailed...announced the addition of "Digestive System - Acidity Drug Pipeline Report" to their offering...