Base A substance that produces

Base A substance that produces hydroxide ions in aqueous solution. A proton acceptor substance. 

Barometer a device for measuring atmospheric pressure. (5.1) Base a substance that produces hydroxide ions in aqueous solution, a proton acceptor. (7.2)... 

Base A substance that produces OH (aq) ions in aqueous solution. Strong bases are soluble in water and are completely dissociated. Weak bases ionize only sUghtly. 

Weak base A substance that produces fewer hydroxide ions in water solution than particles of the substance added. 

In aqueous solution a substance that produces an excess of OH is a BASE. A substance that produces an excess of H3O+ is an ACID. A substance that has no effect on either concentration is NEUTRAL. 

In an acid-base reaction, an acid, a substance that produces in solution, reacts with a base, a substance that produces OH in solution, and the two neutrahze each other, producing water (or in some cases a weak electrolyte). 

In Chapter 4 we considered an acid to be a substance that produces an excess of H+ ions in water. A base was similarly defined to be a substance that forms excess OH- ions in water solution. This approach, first proposed by Svante Arrhenius in 1884, is a very practical one, but it has one disadvantage. It severely limits the number of reactions that qualify as acid-base. 

Since production of OH (agJ and reaction with H+(ag) go hand in hand when we are dealing with aqueous solutions, a base can be described either as a substance that produces OH (aq) or as a substance that can react with H+fag). In solvents other than water, the latter description is more generally useful. Therefore, we postulate a substance has the properties of a base if it can combine with hydrogen ions. 

Arrhenius theory (1887) the theory stating that acids and bases are defined in terms of their structure and the ions produced when they dissolve in water defines an acid as a substance that produces hydrogen ions in water and a base as a substance that produces hydroxide ions in water (8.1) asymmetrical alkene an alkene that has different groups on either side of the double bond (2.2) atom the basic unit of an element, which still retains the element s properties (Review)... 

According to the Arrhenius definition of acids and bases, acids are substances that produce hydrogen ions (H+) in solution, and bases are substances that produce hydroxide ions (OH ) in solution. When an acid and a base combine, the hydrogen ions from the acid react with the hydroxide ions from the base to form water—a neutralization reaction. 

According to Arrhenius s definition, an acid is a substance that produces hydronium ion (H3O ), and a base produces hydroxide ion (OH ) in aqueous solution. An acid reacts with a base to produce salt and water. 

Pure water can be considered both an acid and a base because water dissociates slightly to produce hydrogen and hydroxide ions H2Offi < > H+(a(i) + OH (a. This equation depicts water as an Arrhenius acid and base. An Arrhenius acid is any substance which when dissolved in water produces hydrogen ions, H+. An Arrhenius base is a substance that produces hydroxide ions, OH. Treating water in terms of the Brans ted-Lowry theory, a more appropri-... 

A substance that produces H+ ion in water is an acid. A substance that reacts with H+ ion or that produces Oil ion, which can react with H+ to produce H20, is a base. A common example of an acid is an aqueous solution of hydrogen chloride, which is completely ionized to H+ and CL ions in water to produce a solution of hydrochloric acid. Although it does not contain H+ ion, carbon dioxide acts as an acid in water because it undergoes the following reaction, producing H+ ... 

Arrhenius theory of acids and bases the theory stating that an acid is a substance that produces hydrogen ions in water and a base is a substance that produces hydroxide ions in water (10.1)... 

A substance that produces hydroxyl ions, OH, when dissolved in water. An alkali is a soluble base. A base is usually an oxide or hydroxide of a metal. 

Earlier in this chapter we considered Arrhenius s concept of acids and bases An acid is a substance that produces H+ ions when dissolved in water, and a base is a substance that produces OH- ions. Although these ideas are fundamentally correct, it is convenient to have a more general definition of a base, which covers substances that do not produce OH- ions. Such a definition was provided by Bransted and Lowry, who defined acids and bases as follows ... 

According to the Arrhenius concept, a base is a substance that produces OH-ions in aqueous solution. According to the Bronsted-Lowry definition, a base is a proton acceptor. The bases sodium hydroxide (NaOH) and potassium hydroxide (KOH) fulfill both criteria. They contain OH- ions in the solid lattice and behave as strong electrolytes, dissociating completely when dissolving in water ... 

An add can be defined as a substance that produces hydrogen ions, H, in aqueous solutions. We usually write the formulas of inorganic acids with hydrogen written first. Organic acids can often be recognized by the presence of the COOH group in the formula. A base is a substance that produces hydroxide ions, OH , in aqueous solutions. A salt is a compound that contains a cation other than H and an anion other than hydroxide ion, OH , or oxide ion, (see Table 2-3 on page 55). As we will see later in this chapter, salts are formed when acids react with bases. 

The behavior of bases is also described at the molecular level by the interaction of the base with water. A base is a substance that produces hydroxide ions, OH, when it dissolves in water. There are two mechanisms by which bases produce hydroxide ions when they dissolve in water. 

According to the modern version of the Arrhenius theory of acids and bases, a base is a substance that produces hydroxide ions, OH , when it is added to water. A solution that has a significant concentration of hydroxide ions is called a basic solution. Sodium hydroxide, NaOH, is the most common laboratory base. It is designated a strong base because for every NaOH unit dissolved, one hydroxide ion is formed in solution. 

A base is a substance that produces OH ions when dissolved in water. 

Arrhenius also found that aqueous solutions that exhibit basic behavior always contain hydroxide ions. He defined a base as a substance that produces hydroxide ions (OH ) in water. The base most commonly used in the chemical laboratory is sodium hydroxide, NaOH, which contains Na and OH ions and is very soluble in water. Sodium hydroxide, like all ionic substances, produces separated cations and anions when it is dissolved in water. 

In the Arrhenius definition, an acid is a substance that produces hydrogen ions (H ) when dissolved in water. An Arrhenius base produces hydroxide ions (OH ) when dissolved in water. These definitions are not complete because they limit the bases to compoimds with a hydroxide ion, and the only allowable solvent is water. 

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