binary acid
(noun)
molecular compounds in which hydrogen is combined with a second nonmetallic element
Examples of binary acid in the following topics:
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Binary Acids
- Binary acids are certain molecular compounds in which hydrogen is bonded with a nonmetal.
- Binary acids are certain molecular compounds in which hydrogen is combined with a second nonmetallic element; these acids include HF, HCl, HBr, and HI.
- The names of binary acids begin with "hydro-" followed by the name of the other element, modified to end with "-ic."
- Binary acids are one of two classes of acids, the second being oxoacids (or oxyacids), which consist of hydrogen, oxygen, and a third element, which is often a non-metal.
- It is a member of the binary acids.
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Naming Acids and Bases
- Simple acids, known as binary acids, have only one anion and one hydrogen.
- So, HNO3 will be nitric acid.
- Therefore, HClO4 is called perchloric acid.
- For example, chlorous acid is HClO2.
- For example, instead of bromic acid, HBrO3, we have hypobromous acid, HBrO.
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Oxoacids
- Halogen oxoacids include hypochlorous acid (HOCl); chlorous acid(HOClO); chloric acid(HOClO2); oerchloric acid(HOClO3); oerbromic acid (HOBrO3)
- All oxoacids have the acidic hydrogen bound to an oxygen atom, so bond strength (length) is not a factor, similar to binary nonmetal acids; instead, the main determining factor for an oxacid's relative strength has to do with the central atom's electronegativity (X), as well as the number of O atoms around that central atom.
- Consider the simple oxyacids HOI (hypoiodous acid), HOBr (hypobromous acid), and HOCl (hypochlorous acid).
- Carboxylic acids are the most common type of organic acid.
- Mellitic acid is an example of a hexacarboxylic acid.
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Binary Hydrides
- Hydrides can be used as strong bases in organic syntheses, and their reaction with weak Bronsted acids releases dihydrogen (H2).
- Most ionic hydrides exist as "binary" materials that involve only two elements, one of which is hydrogen.
- In these substances, the hydride bond, formally, is a covalent bond much like the bond that is made by a proton in a weak acid.
- Such bulk transition metals form interstitial binary hydrides when exposed to hydrogen.
- This is a space-filling model of a crystal of lithium hydride, LiH, a binary halide.
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Halogen Compounds
- The halogens all form binary compounds with hydrogen, and these compounds are known as the hydrogen halides: hydrogen fluoride (HF), hydrogen chloride (HCl), hydrogen bromide (HBr), hydrogen iodide (HI), and hydrogen astatide (HAt).
- All of these except HF are strong chemical acids when dissolved in water.
- The names of these acids are as follows:
- All of these acids are dangerous and must be handled with great care.
- They are also used by the body to produce stomach acid.
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Peptidoglycan Synthesis and Cell Division
- Peptidoglycan, also known as murein, is a polymer and consists of sugars and amino acids which form the cell walls of bacteria.
- Some Archaea have a similar layer of pseudopeptidoglycan or pseudomurein, where the sugar residues are β-(1,3) linked N-acetylglucosamine and N-acetyltalosaminuronic acid.
- The sugar component consists of alternating residues of β-(1,4) linked N-acetylglucosamine and N-acetylmuramic acid.
- Attached to the N-acetylmuramic acid is a peptide chain of three to five amino acids.
- Peptidoglycan is also involved in binary fission during bacterial cell reproduction.
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Generation Time
- Bacterial growth occurs by the division of one bacterium into two daughter cells in a process called binary fission.
- Bacterial growth is the division of one bacterium into two daughter cells in a process called binary fission.
- Finally, the stationary phase is due to a growth-limiting factor, such as depletion of a nutrient and/or the formation of inhibitory products such as organic acids.
- It emphasizes clonality, asexual binary division, the short development time relative to replication itself, the seemingly low death rate, the need to move from a dormant state to a reproductive state or to condition the media, and finally, the tendency of lab adapted strains to exhaust their nutrients.
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Common Bacterial Traits
- Bacteria grow in soil, acidic hot springs, radioactive waste, water, and deep in the Earth's crust.
- Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction .
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The Cell Wall of Bacteria
- These ancestral cells reproduce by means of binary fission, duplicating their genetic material and then essentially splitting to form two daughter cells identical to the parent.
- Peptidoglycan is a huge polymer of disaccharides (glycan) cross-linked by short chains of identical amino acids (peptides) monomers.
- The backbone of the peptidoglycan molecule is composed of two derivatives of glucose: N-acetylglucosamine (NAG) and N-acetlymuramic acid (NAM) with a pentapeptide coming off NAM and varying slightly among bacteria.
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The Halogens (Group 17)
- The halogens all form binary compounds with hydrogen, known as the hydrogen halides: hydrogen fluoride (HF), hydrogen chloride (HCl), hydrogen bromide (HBr), hydrogen iodide (HI), and hydrogen astatide (HAt).
- However, hydrofluoric acid is quite destructive to animal tissue.
- The names of these acids are as follows: hydrofluoric acid, hydrochloric acid, hydrobromic acid, and hydroiodic acid.
- Some of these acids are also widely used in industry.
- Dissolved chlorine reacts to form hydrochloric acid (HCl) and hypochlorous acid (HClO), a solution that can be used as a disinfectant or bleach: