Neutral Salts

Neutral salts are ionic compounds formed when an acid and a base undergo complete neutralization, producing a salt without replaceable acidic hydrogen or basic hydroxide groups. In a typical strong acid–strong base reaction, hydrogen ions combine with hydroxide ions to form water, while the remaining cations and anions assemble into an ionic solid; when dissolved, these ions usually undergo little hydrolysis and give a solution near neutral pH. Chemistry uses neutral salts to study acid–base reactions, ionic dissociation, conductivity, and solubility. Their preparation and behavior also support analytical testing, electrolyte formulation, and control of ionic strength in laboratory solutions.

Neutral Salts - Related Videos

Education

JoVE Core - Chemistry

Determining the pH of Salt Solutions

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2020

The pH of a salt solution is determined by its component anions and cations. Salts that contain pH-neutral anions and the hydronium ion-producing cations form a solution with a pH less than 7. For example, in ammonium nitrate (NH4NO3) solution, NO3− ions do not react with water whereas NH4+ ions produce the hydronium ions resulting in the acidic solution. In contrast, salts that contain pH-neutral cations and the hydroxide ion-producing anions form a solution with a pH greater than 7. For...

Responses to Salt Stress

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2020

Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients. Plant cell cytoplasm has a high solute concentration, which causes water to flow from the soil into the plant due to osmosis. However, excess salt in the surrounding soil increases the soil solute concentration, reducing the plant’s ability to take up water. High levels of...

Acids, Bases and Neutralization Reactions

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2020

An acid-base reaction is one in which a hydrogen ion, H+, is transferred from one chemical species to another. Such reactions are of central importance to numerous natural and technological processes, ranging from the chemical transformations within cells or lakes and oceans to the industrial-scale production of fertilizers, pharmaceuticals, and other substances essential to the society. There are several ways of defining an acid. In the context of aqueous solutions, an acid is a substance...

Research

JoVE Journal - Immunology and Infection
Free Sample

Optimization of a Quantitative Micro-neutralization Assay

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Cited by 22 •

2016

This study describes an imaging-based micro-neutralization assay to analyze the antigenic relationships between viruses. The protocol employs a flatbed scanner and has four steps, including titration, titration quantitation, neutralization, and neutralization quantitation. The assay works well with current circulating influenza A(H1N1)pdm09, A(H3N2), and B viruses.

Hydrophobic Salt-modified Nafion for Enzyme Immobilization and Stabilization

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Cited by 23 •

2012

This article will describe the procedure for synthesizing a hydrophobically modified Nafion enzyme immobilization membrane and how to immobilize proteins and/or enzymes within the membrane and test their specific activity.

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