Acid A substance that produces hydrogen

Acid A substance that produces hydrogen ions in solution. A proton donor substance. 

Accuracy the agreement of a particular value with the true value. (1.4) Acid a substance that produces hydrogen ions in solution a proton donor. (2.8 4.2 4.8)... 

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. 

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)... 

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. 

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. 

The first scientific definition in this new field was described by a Nobel laureate, Swedish chemist Svante Arrhenius (1859-1927). His theory, which is now called the Arrhenius acid-base concept, states that acids are substances that produce hydrogen ions in an aqueous solution. Hydrogen ions (H+) do not exist in solutions because they are always attached to at least one water molecule- often written as hydroxonium ion (H3O+). More detailed studies show that H3O+ ions are not very common, either, and hydrogen ions are often attached to more than one water molecules. But this is only a matter of notation and different chemists use H+, H3O+, Hj02 or H,03+ to mean essentially the same thing. 

Acid (Arrhenius definition) a substance that produces hydrogen ions, H, (hydronium ion, H30 ) when it dissolves in water. (4.4 and 16.1) (Brpnsted-Lowry definition) the species (molecule or ion) that donates a proton to another species in a proton-transfer reaction. (4.4 and 16.2)... 

Svante Arrhenius (1859-1927) was a Swedish physical chemist who was awarded the Nobel Prize in Chemistry in 1903 for his work on ionic solutions. His theory of acids and bases defined acids as substances that produce hydrogen ions in solution (as the only positive ions) and bases as substances that produce hydroxide ions (as the only negative ions). In addition he explored the relationship between the rate of a chemical reaction and temperature. The equation which bears his name was originally proposed by the Dutch chemist J.H. varit Hoff, but it was Arrhenius who provided a physical interpretation and justification for it When the temperature increases, the rate of a chemical reaction increases very rapidly. It has been found that for many reactions, the initial rate and the rate constant. 

In 1887, the Swedish chemist Svante Arrhenins was the first to describe acids as substances that produce hydrogen ions (H ) when they dissolve in water. For example, hydrogen chloride ionizes in water to give hydrogen ions, H, and chloride ions, Cl . It is the hydrogen ions that give acids a sour taste, change the blue litmus indicator to red, and corrode some metals. 

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+ ... 

The Arrhenius model of acids and bases If pure water itself is neutral, how does an aqueous solution become acidic or basic The first person to answer this question was the Swedish chemist Svante Arrhenius, who in 1883 proposed what is now called the Arrhenius model of acids and bases. The Arrhenius model states that an acid is a substance that contains hydrogen and ionizes to produce hydrogen ions in aqueous solution. A base is a substance that contains a hydroxide group and dissociates to produce a hydroxide ion in aqueous solution. Some household acids and bases are shown in Figure 19-3. 

In the Arrheitius model, an acid is a substance that contains hydrogen and ionizes in aqueous solution to produce hydrogen ions. An Arrhenius base is a substance that contains a OH group and dissociates in aqueous solution to produce hydroxide ions. 

The submicroscopic behavior of acids when they dissolve in water can be described in several ways. The simplest definition is that an acid is a substance that produces hydronium ions when it dissolves in water. A hydroni-um ion, H30, consists of a hydrogen ion attached to a water molecule. 

In the Bronsted theory, an acid is defined as a substance that donates a proton to another substance. In this sense, a proton is a hydrogen atom that has lost its electron it has nothing to do with the protons in the nuclei of other atoms. (The nuclei of 2H are also considered protons they are also hydrogen ions.) A base is a substance that accepts a proton from another substance. The reaction of an acid and a base produces another acid and base. The following reaction is thus an acid-base reaction according to Bronsted ... 

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