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Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
Laboratory glassware. Laboratory glassware is a variety of equipment used in scientific work, traditionally made of glass. Glass may be blown, bent, cut, molded, or formed into many sizes and shapes. It is commonly used in chemistry, biology, and analytical laboratories.
Laboratory flasks are vessels or containers that fall into the category of laboratory equipment known as glassware. In laboratory and other scientific settings, they are usually referred to simply as flasks. Flasks come in a number of shapes and a wide range of sizes, but a common distinguishing aspect in their shapes is a wider vessel "body ...
A. Richard Abegg (1869–1910), German chemist. Frederick Abel (1827–1902), English chemist. Friedrich Accum (1769–1838), German chemist, advances in the field of gas lighting. Homer Burton Adkins (1892–1949), American chemist, known for work in hydrogenation of organic compounds. Peter Agre (born 1949), American chemist and doctor, 2003 ...
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Burette. A burette (also spelled as buret) [1] is a graduated glass tube with a tap at one end, for delivering known volumes of a liquid, especially in titrations. It is a long, graduated glass tube, with a stopcock at its lower end and a tapered capillary tube at the stopcock's outlet. The flow of liquid from the tube to the burette tip is ...
Test tubes are convenient containers for heating small amounts of liquids or solids with a Bunsen burner or alcohol burner. The tube is usually held by its neck with a clamp or tongs. By tilting the tube, the bottom can be heated to hundreds of degrees in the flame, while the neck remains relatively cool, possibly allowing vapours to condense ...
Hornig was born in Ústí nad Labem in 1921 [3] into a Jewish family [4] to Erwin Schwenk, an organic chemist, and the former Rascha Shapiro, a pediatrician. [5] In 1929 her family moved to Berlin. Four years later she and her mother came to the United States, following her father who had moved there to escape the Nazis. [2]