Aqueous Sodium Hydroxide
Aqueous Sodium Hydroxide - Related Videos
03:03
Chemical Reactions in Aqueous Solutions
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2020
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction. Water is a good solvent that can dissolve many substances. For this reason, many chemical reactions take place in water. Such reactions are called aqueous reactions. The three most common types of aqueous reactions are precipitation, acid-base, and...
02:42
Aqueous Solutions and Heats of Hydration
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2020
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water. When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
06:32
A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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Cited by 15 •
2016
The study of methods to generate on-demand hydrogen for fuel cells continues to grow in importance. However, systems to measure hydrogen evolution from the reaction of chemicals with water can be complicated and expensive. This article details a simple, low-cost, and robust method to measure the evolution of hydrogen gas.
07:30
Determining the Mass Percent Composition in an Aqueous Solution
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2023
Source: Laboratory of Dr. Neal Abrams — SUNY College of Environmental Science and Forestry Determining the composition of a solution is an important analytical and forensic technique. When solutions are made with water, they are referred to as being aqueous, or containing water. The primary component of a solution is referred to as the solvent, and the dissolved minor component is called the solute. The solute is dissolved in the solvent to make a solution. Water is the most common solvent in...
05:50
Facile Preparation of Ultrafine Aluminum Hydroxide Particles with or without Mesoporous MCM-41 in Ambient Environments
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Cited by 2 •
2017
An ultrafine aluminum hydroxide nanoparticle suspension was prepared via the controlled titration of [Al(H2O)]3+ with L-arginine to pH 4.6 with and without cage-effect confinement within mesoporous channels of MCM-41.
FAQs
Hydroxide ions accept protons from acidic substances, reducing their acidity and increasing the solution’s pH. Because sodium hydroxide dissociates essentially completely in water, it supplies hydroxide efficiently throughout the solution. This proton-accepting behavior explains its usefulness in neutralization reactions and in adjusting chemical conditions when a less acidic environment is required.
Dissolving or diluting concentrated sodium hydroxide releases heat, so the solution can warm substantially during preparation. This thermal effect adds to the solution’s corrosive nature and makes uncontrolled handling hazardous. In chemistry work, recognizing both risks is important when preparing or modifying the solution, because heat release and corrosivity can affect safe laboratory or industrial operations.
During saponification, hydroxide from aqueous sodium hydroxide drives the base-catalyzed conversion of fats into soap. The solution therefore acts as a chemically active reactant rather than merely adjusting acidity. This application connects the behavior of hydroxide ions with the production of a familiar material and demonstrates how a strong base can promote a broader chemical transformation.
Adding aqueous sodium hydroxide supplies hydroxide ions that accept protons from acids. The resulting decrease in acidity raises pH, allowing chemists to neutralize acidic mixtures or establish a desired pH condition. These two uses are closely related but serve different purposes: neutralization addresses acidity through reaction, while pH adjustment focuses on bringing the solution to a suitable chemical condition.
In acid–base titrations, aqueous sodium hydroxide serves as a strong basic solution for controlling the reaction with an acidic substance. Its essentially complete dissociation provides hydroxide ions that participate directly in proton transfer. This makes the solution useful when a laboratory procedure requires a reliable basic reagent for examining or managing acid–base behavior.
Aqueous sodium hydroxide is highly corrosive, so its use requires controlled handling and appropriate protective equipment. Care is especially important when concentrated solution is dissolved or diluted, because that process releases heat as well as retaining the chemical hazard. These precautions apply across laboratory and industrial settings where the solution is used for reactions or pH control.