Encyclopedia - Acid Dissociation Constant: Encyclopedia - Acid Dissociation Constant
In chemistry and biochemistry, acid dissociation constant, the acidity constant, or the acid-ionization constant (Ka) is a specific type ...   » Read the article

Encyclopedia - Acid Dissociation Constant: Encyclopedia Ii - Acid Dissociation Constant - The Relative Strengths Of Acids And Bases
The strengths of acids and bases in aqueous solutions are determined by the values of the dissociation constants Ka and Kb for acids and ...   » Read the article

Encyclopedia - Acid Dissociation Constant: Encyclopedia Ii - Acid Dissociation Constant - Basicity Constant Of The Conjugate Base
By analogy, one can define the basicity constant (Kb) and the pKb of the conjugate base A–: pKb = −log10Kb T...   » Read the article

Encyclopedia - Ka: Encyclopedia - Ka
Ka may mean: Ka , Fire Kà (Cirque du Soleil), a troupe based at the MGM Grand Las Vegas Ka (cyrillic), a letter of Cyrillic alphabet Ka...   » Read the article

Encyclopedia - Carbonic Acid: Encyclopedia - Carbonic Acid
Carbonic acid is a carbon-containing acid with the formula H2CO3. It is also a name sometimes given to solutions of carbon dioxide in wat...   » Read the article

Encyclopedia - Acid: Encyclopedia - Acid
Acid-base reaction theories pH Self-ionization of water Buffer solutions Systematic naming Redox reactions Electrochemistry Acids: Stron...   » Read the article

Encyclopedia - Weak Acid: Encyclopedia - Weak Acid
Acid-base reaction theories pH Self-ionization of water Buffer solutions Systematic naming Redox reactions Electrochemistry Acids: Stron...   » Read the article

Encyclopedia - Protic Solvent: Encyclopedia - Protic Solvent
In chemistry any solvent that carries hydrogen attached to oxygen as in a hydroxyl group, nitrogen as in a amine group, or, more generall...   » Read the article

Encyclopedia - Buffer Solution: Encyclopedia - Buffer Solution
Acid-base reaction theories pH Self-ionization of water Buffer solutions Systematic naming Redox reactions Electrochemistry Acids: Stron...   » Read the article

Encyclopedia - Acid-base Reaction Theories: Encyclopedia - Acid-base Reaction Theories
Acid-base reaction theories pH Self-ionization of water Buffer solutions Systematic naming Redox reactions Electrochemistry Acids: Stron...   » Read the article

Encyclopedia - Base Chemistry: Encyclopedia - Base Chemistry
Acid-base reaction theories pH Self-ionization of water Buffer solutions Systematic naming Redox reactions Electrochemistry Acids: Stron...   » Read the article

Encyclopedia - Vanabins: Encyclopedia - Vanabins
Vanabins (also known as vanadium-associated proteins or vanadium chromagen) are a class of metalloproteins containing vanadium. Found onl...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia - Acetic Acid
Acetic acid, also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent s...   » Read the article

Encyclopedia - Absorption Chemistry: Encyclopedia - Absorption Chemistry
Absorption, in chemistry, is a physical or chemical phenomenon or a process in which atoms, molecules, or ions enter some bulk phase - ga...   » Read the article

Encyclopedia - Weak Base: Encyclopedia - Weak Base
Acid-base reaction theories pH Self-ionization of water Buffer solutions Systematic naming Redox reactions Electrochemistry Acids: Stron...   » Read the article

Encyclopedia - Biotin: Encyclopedia - Biotin
Biotin, also known as vitamin H or B7 and C10H16N2O3S (Biotin; Coenzyme R, Biopeiderm), is a water-soluble B-complex vitamin which is com...   » Read the article

Encyclopedia - Ammonia: Encyclopedia - Ammonia
Ammonia is a compound of nitrogen and hydrogen with the formula NH3. At standard temperature and pressure ammonia is a gas. It is toxic a...   » Read the article

Encyclopedia - Concentration: Encyclopedia - Concentration
In chemistry, concentration is the measure of how much of a given substance there is mixed with another substance. This can apply to any ...   » Read the article

Encyclopedia - Dna: Encyclopedia - Dna
Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellula...   » Read the article

Encyclopedia - Dissociation Constant: Encyclopedia Ii - Dissociation Constant - Acid Base Reactions
For the deprotonation of acids, K is known as Ka, the acid dissociation constant. Stronger acids, for example sulfuric or phosphoric acid...   » Read the article

Encyclopedia - Dissociation Constant: Encyclopedia Ii - Dissociation Constant - Pk
The pK value is defined as: where Kd is the dissociation constant. water dissociation constant(Kd)is often expressed as Kw. ... Se...   » Read the article

Encyclopedia - Dissociation Chemistry: Encyclopedia Ii - Dissociation Chemistry - Dissociation Constant
For reversible dissociations in a chemical equilibrium AB <=> A + B the dissociation constant Kd is the ratio of dissociated to u...   » Read the article

Encyclopedia - Acid: Encyclopedia Ii - Acid - Chemical Characteristics
In water the following reversible reaction occurs between an acid (HA) and water, which acts as a base: The acidity constant (or acid ...   » Read the article

Encyclopedia - Acid: Encyclopedia Ii - Acid - Chemical Characteristics
In water the following reversible reaction occurs between an acid (HA) and water, which acts as a base: HA + H2O ⇌ H3O + + A − The ...   » Read the article

Encyclopedia - Polyelectrolyte: Encyclopedia Ii - Polyelectrolyte - Polyelectrolyte Charge
Acids are classified as either weak or strong (and bases similarly may be either weak or strong). Similarly, polyelectrolytes can be divi...   » Read the article

Encyclopedia - Carbonic Acid: Encyclopedia Ii - Carbonic Acid - Acidity Of Carbonic Acid
Carbonic acid has two acidic hydrogens and so two dissociation constants: H2CO3 ⇌ HCO3− + H+ Ka1 = 2.5×10−4 mol/L; pKa1 = 3.60...   » Read the article

Encyclopedia - Base Chemistry: Encyclopedia Ii - Base Chemistry - Bases And Ph
The pH of (impure) water is a measure of its acidity. In pure water, about one in ten million molecules dissociate into hydronium ions (H...   » Read the article

Encyclopedia - Self-ionization Of Water: Encyclopedia Ii - Self-ionization Of Water - Concentration And Frequency
The preceding reaction has a chemical equilibrium constant. For reactions in water (or any aqueous solutions), the molarity (a unit of co...   » Read the article

Encyclopedia - Acid: Encyclopedia Ii - Acid - Common Acids
Acid - Strong inorganic acids. Hydrobromic acid Hydrochloric acid Hydroiodic acid Nitric acid Sulfuric acid Perchloric acid Acid - M...   » Read the article

Encyclopedia - Acid: Encyclopedia Ii - Acid - Acid Number
The Acid number is used to quantify the amount of acid present, for example in a sample of biodiesel. It is the quantity of base, express...   » Read the article

Encyclopedia - Titration: Encyclopedia Ii - Titration - Titration Curves
Titrations are often recorded on titration curves, whose compositions are generally identical: the independent variable is the volume of ...   » Read the article

Encyclopedia - Acid: Encyclopedia Ii - Acid - Neutralization
Neutralization is a type of reaction between an acid and a base. The products include a salt and water. So, it is also called a water for...   » Read the article

Encyclopedia - Ph: Encyclopedia Ii - Ph - Calculation Of Ph For Weak And Strong Acids
Values of pH for weak and strong acids can be approximated using certain assumptions. Under the Brønsted-Lowry theory, stronger or weake...   » Read the article

Encyclopedia - Acid: Encyclopedia Ii - Acid - Different Definitions Of Acid/base
The word acid comes from the Latin acidus meaning sour but in chemistry the term acid has a more specific meaning. There are three common...   » Read the article

Encyclopedia - Ph: Encyclopedia Ii - Ph - Poh
There is also pOH, in a sense the opposite of pH, which measures the concentration of OH− ions. Since water self ionizes, and notating ...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Chemistry
Hydrogen chloride (HCl) is a monoprotic acid, which can dissociate (i.e., ionize) only once to give up one H+ ion (a single proton). In a...   » Read the article

Encyclopedia - Carbonic Acid: Encyclopedia Ii - Carbonic Acid - Carbonic Acid And Rain Water
A solution of carbon dioxide in water in equilibrium with the atmosphere (0.033% CO2) has a pH of 5.6. Rain water is normally not quite s...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Chemistry
Hydrogen chloride (HCl) is a monoprotic acid, which can dissociate (i.e., ionize) only once to give up one H+ ion (a single proton). In a...   » Read the article

Encyclopedia - Acid-base Reaction Theories: Encyclopedia Ii - Acid-base Reaction Theories - Common Acid-base Theories
Acid-base reaction theories - Lavoisier's definition. The first scientific definition was proposed by the French chemist Antoine Lavois...   » Read the article

Encyclopedia - Base Chemistry: Encyclopedia Ii - Base Chemistry - Neutralization Of Acids
When dissolved in water, the base sodium hydroxide decomposes into hydroxide and sodium ions: and similarly, in water hydrogen chlorid...   » Read the article

Encyclopedia - Vanabins: Encyclopedia Ii - Vanabins - Theories
Vanabins - Vanabins as oxygen carriers. Because of the high concentration of vanadium in the blood, it has been assumed that vanabins a...   » Read the article

Encyclopedia - Hydrogen Chloride: Encyclopedia Ii - Hydrogen Chloride - Chemistry
The hydrogen chloride molecule HCl is a simple diatomic molecule consisting of a hydrogen atom H and a chlorine atom Cl connected with a ...   » Read the article

Encyclopedia - Ph: Encyclopedia Ii - Ph - Definition
Though a pH value has no unit, it is not an arbitrary scale; the number arises from a definition based on the activity of hydrogen ions i...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Safety
Hydrochloric acid in high concentrations forms acidic mists. Both the mist and the solution have a corrosive effect on human tissue, pote...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Safety
Hydrochloric acid in high concentrations forms acidic mists. Both the mist and the solution have a corrosive effect on human tissue, pote...   » Read the article

Encyclopedia - Biotin: Encyclopedia Ii - Biotin - Biochemistry
Biotin is a cofactor responsible for carbon dioxide transfer in several carboxylase enzymes: Acetyl-CoA carboxylase Methylcrotonyl-CoA c...   » Read the article

Encyclopedia - Sulfuric Acid: Encyclopedia Ii - Sulfuric Acid - Physical Properties
Sulfuric acid - Forms of sulfuric acid. Although 100% sulfuric acid can be made, this loses SO3 at the boiling point to produce 98.3% a...   » Read the article

Encyclopedia - Sulfuric Acid: Encyclopedia Ii - Sulfuric Acid - Chemical Properties
Sulfuric acid - Forms of sulfuric acid. Although 100% sulfuric acid can be made, this loses SO3 at the boiling point to produce 98.3% a...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - History
Hydrochloric acid was first discovered around the year 800 by Arab-Yemeni alchemist Jabir ibn Hayyan (Geber), by mixing common salt with ...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Hydrochloric Acid And Living Organisms
Hydrochloric acid - Physiology. Hydrochloric acid constitutes the majority of gastric acid, the human digestive fluid. In a complex pro...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - History
Vinegar is as old as civilization itself, perhaps older. Acetic acid-producing bacteria are present throughout the world, and any culture...   » Read the article

Encyclopedia - Titration: Encyclopedia Ii - Titration - Types
Different types of titration include: Acid-base titration Redox titration is a type of titration based on a redox reaction between the a...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - Applications
Acetic acid is a chemical reagent for the production of many chemical compounds. The largest single use of acetic acid is in the producti...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Production
Hydrochloric acid - Direct synthesis. The large scale production of hydrochloric acid is almost always integrated with other industrial...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Production
Hydrochloric acid - Direct synthesis. The large scale production of hydrochloric acid is almost always integrated with other industrial...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - Chemical Properties
The hydrogen (H) atom in the carboxyl group (−COOH) in carboxylic acids such as acetic acid can be given off as an H+ ion (proton), giv...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - Nomenclature
The trivial name acetic acid is the most commonly used and officially preferred name by the IUPAC. This name derives from acetum, the Lat...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - Biochemistry
The acetyl group, derived from acetic acid, is fundamental to the biochemistry of virtually all forms of life. When bound to coenzyme A i...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Chemistry
Hydrogen sulfide is a covalent hydride chemically related to water (H2O) since oxygen and sulfur occur in the same periodic table group. ...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - Safety
Concentrated acetic acid is corrosive and must therefore be handled with appropriate care, since it can cause skin burns, permanent eye d...   » Read the article

Encyclopedia - Titration: Encyclopedia Ii - Titration - Procedure
N.B. Before starting, make sure that all of your glassware—especially the burette—is clean and dry. Accurately measure a volume of t...   » Read the article

Encyclopedia - Hydrochloric Acid: Encyclopedia Ii - Hydrochloric Acid - Applications
Hydrochloric acid is a strong inorganic acid that is used in many industrial processes. The application often determines the required pro...   » Read the article

Encyclopedia - Hydrogen Bond: Encyclopedia Ii - Hydrogen Bond - Hydrogen Bond In Water
The most ubiquitous, and perhaps simplest, example of a hydrogen bond is found between water molecules. In a discrete water molecule, wat...   » Read the article

Encyclopedia - Hydrogen Bond: Encyclopedia Ii - Hydrogen Bond - Hydrogen Bond In Proteins And Dna
Hydrogen bonding also plays an important role in determining the three-dimensional structures adopted by proteins and nucleic acids. In t...   » Read the article

Encyclopedia - Ammonia: Encyclopedia Ii - Ammonia - Liquid Ammonia As A Solvent
Liquid ammonia is the best-known and most widely studied non-aqueous ionizing solvent. Its most conspicuous property is its ability to di...   » Read the article

Encyclopedia - Ammonia: Encyclopedia Ii - Ammonia - History
Salts of ammonia have been known from very early times; thus the term Hammoniacus sal appears in the writings of Pliny, although it is no...   » Read the article

Encyclopedia - Ammonia: Encyclopedia Ii - Ammonia - Production
Because of its many uses, ammonia is one of the most highly-produced inorganic chemicals. Before the start of WWI most ammonia was obtain...   » Read the article

Encyclopedia - Acetic Acid: Encyclopedia Ii - Acetic Acid - Production
Acetic acid is produced both synthetically and by bacterial fermentation. Today, the biological route accounts for only about 10% of worl...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Manufacture And Use
Hydrogen sulfide used to have importance in analytical chemistry for well over a century, in the qualitative inorganic analysis of metal ...   » Read the article

Encyclopedia - Ammonia: Encyclopedia Ii - Ammonia - Properties
Ammonia is a colourless gas with a characteristic pungent smell; it is lighter than air, its density being 0.589 times that of air. It is...   » Read the article

Encyclopedia - Biotin: Encyclopedia Ii - Biotin - Uses
Biotin - Hair problems. Biotin supplements are often recommended as a natural product to counteract the problem of hair loss in both ch...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Function In The Body
Hydrogen sulfide is produced in small amounts by some cells of the mammalian body and has a number of biological functions. (Only two oth...   » Read the article

Encyclopedia - Ammonia: Encyclopedia Ii - Ammonia - Uses
The most important single use of ammonia is in the production of nitric acid. A mixture of one part ammonia to nine parts air is passed o...   » Read the article

Encyclopedia - Ammonia: Encyclopedia Ii - Ammonia - Safety Precautions
Ammonia - Toxicity. The toxicity of ammonia solutions does not usually cause problems for humans and other mammals, as a specific mecha...   » Read the article

Encyclopedia - Biotin: Encyclopedia Ii - Biotin - Biotin Deficiency
Biotin deficiency is a rare nutritional disorder caused by a deficiency of biotin. Biotin deficiency can have a very serious, even fatal,...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Occurrence
Small amounts of hydrogen sulfide occur in crude petroleum but natural gas can contain up to 28%. Volcanoes and hot springs emit some H2S...   » Read the article

Encyclopedia - Cucurbituril: Encyclopedia Ii - Cucurbituril - Applications
Given their high affinities to form inclusion complexes cucurbiturils have been employed as the macrocycles component of a rotaxane. Afte...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Dangers
The gas is highly toxic. It is slightly heavier than air, so tends to concentrate at the bottom of poorly ventilated spaces - deep wells,...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Health Effects
Hydrogen sulfide is considered a broad-spectrum poison, meaning that it can poison several different systems in the body, although the ne...   » Read the article

Encyclopedia - Hydrogen Sulfide: Encyclopedia Ii - Hydrogen Sulfide - Induced Hibernation
In 2005, Mark Roth and other scientists from the University of Washington and the Fred Hutchinson Cancer Research Center in Seattle demon...   » Read the article

Encyclopedia - Concentration: Encyclopedia Ii - Concentration - Quantitative Notation
Quantitative notation of concentration is far more informative and useful from a scientific point of view. There are a number of differen...   » Read the article

Encyclopedia - Ozone Depletion: Encyclopedia Ii - Ozone Depletion - Observations
The most pronounced decrease in ozone has been in the lower stratosphere. However, the ozone hole is most usually measured not in terms o...   » Read the article

Encyclopedia - Acid Dissociation Constant: Encyclopedia Ii - Acid Dissociation Constant - Relationship Between Acidity And Basicity Constants
There exists a relationship between the value of Ka for an acid HA and the value of Kb for its conjugate base A–. Since adding the ioni...   » Read the article

Article - Popular Pages Sitemap Vi - A
This is a sitemap for Popular Pages VI - A . Click on a link and you will find multiple definitions and articles related to the word. ...   » Read the article