Ammonia Ammonium
Ammonia Ammonium - Related Videos
08:14
Ammonia Synthesis at Low Pressure
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Cited by 17 •
2017
Ammonia can be synthesized at low pressure by using a conventional catalyst and an ammonia selective absorbent.
09:50
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
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Cited by 31 •
2015
We demonstrate the extraction of ammonium from an ammonium-rich stream using an electrochemical and a bioelectrochemical system. The reactor setup, operation and data analysis are discussed.
06:27
Fast and Accurate Exhaled Breath Ammonia Measurement
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Cited by 16 •
2014
Ammonia is an important physiologic metabolite relevant to various disease and wellness states. It is also a difficult molecule to measure in breath, which demands particular precautions be taken to obtain accurate results. Not all factors influencing ammonia are known, but progress can be difficult without accounting for these factors.
12:05
Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
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Cited by 15 •
2013
Herein the procedures for plasma enhanced chemical vapor deposition of perfluoroalkanes on microporous materials such as metal-organic frameworks to enhance their stability and hydrophobicity are described. Furthermore, breakthrough testing of milligram quantities of samples is described in detail.
01:30
Preparation of Amines: Alkylation of Ammonia and Amines
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2025
Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation. Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
FAQs
pH shifts the reversible proton-transfer equilibrium between the two species. More acidic conditions favor proton acceptance by ammonia and therefore increase the ammonium fraction, while less acidic conditions favor the neutral form. This pH dependence determines the composition and chemical behavior of aqueous solutions containing ammonia and ammonium.
Temperature is one of the conditions that influences the balance between ammonia and ammonium in aqueous systems. Because the equilibrium responds to both pH and temperature, changing temperature can alter the relative amounts of the species present. Interpreting solution behavior therefore requires considering temperature alongside acidity.
The Brønsted–Lowry model describes ammonia as a proton acceptor and ammonium as the corresponding protonated form. Their reversible interconversion provides a direct example of conjugate acid–base behavior. This framework helps explain why the pair can participate in acid–base reactions and contribute to the behavior of buffer systems.
Aqueous ammonia solutions are alkaline because ammonia participates in a reversible acid–base process that produces ammonium while affecting the solution’s proton balance. The extent of this behavior depends on the equilibrium conditions, especially pH and temperature. Consequently, the solution’s alkalinity is linked to the relative abundance and reactivity of the paired species.
The paired species can support buffer systems because they are connected through a reversible proton-transfer equilibrium. Changes in acidity can shift the balance between them rather than producing only a one-directional reaction. In chemistry, this makes ammonia–ammonium relationships useful for understanding how buffer composition responds to changing conditions.
Ammonia and ammonium compounds are important in fertilizer production because they provide chemically related forms of nitrogen used in agricultural contexts. Their interconversion and differing charge influence how nitrogen-containing materials behave in chemical systems. This application connects acid–base chemistry with the practical management and delivery of nitrogen.
Ammonia and ammonium compounds are relevant to analytical testing because their reversible relationship and condition-dependent distribution provide measurable chemical behavior. Analytical work can consider how the species respond to acidity and temperature when interpreting a sample. Their chemistry therefore supports assessments involving nitrogen-containing solutions and related equilibria.
The ammonia–ammonium pair provides an important chemical context for examining nitrogen cycling in environmental and biological systems. Their interconversion links molecular form, charge, and solution conditions, allowing researchers to consider how nitrogen changes within a system. This perspective complements broader studies of nitrogen movement and transformation in nature.