Single-replacement

A single-replacement chemical reaction is one in which one substance from a compound is replaced by another substance. A generic equation for such a reaction is as follows. 

In this activity, you will use a few metals, their compounds, and dilute hydrochloric acid to show single-replacement reactions and construct an activity series. 

Classify reactions as single-replacement chemical reactions. 

Use numbers to write balanced equations for single-replacement reactions. 

We consider a 100-m length of an aquifer with a porosity of 30% and a nominal dispersivity of 10 cm the dispersivity reflected in the calculation results will be somewhat larger than this value, due to the effects of numerical dispersion. The domain is divided into 100 nodal blocks, each 1 m long. We assume local equilibrium, so time enters into the calculation only as a measure of the cumulative volume of fluid that has passed through the aquifer. Specifying the aquifer s pore volume be replaced 30 times over the course of the simulation, and setting the time span to 30 years, each year in the simulation corresponds to a single replacement of the aquifer s pore fluid. 

Single displacement (replacement) reactions are reactions in which atoms of an element replace the atoms of another element in a compound. All of these single replacement reactions are redox reactions, since the element (in a zero oxidation state) becomes an ion. Most single displacement reactions can be categorized into one of three types of reaction ... 

Predicting Use the diagram to predict if a single-replacement reaction will occur between the following reactants. Write a chemical equation for each reaction that will occur. 

Iron reacts with copper(ll) sulfate in a single replacement reaction. 

Applying Concepts Write a balanced chemical equation for the single-replacement reaction that occurred. 

The standard redox potential of the reaction CeS+ + 3e Ce is -2.2336 V. The metal undergoes single replacement reactions, displacing less electropositive metals from their salts in solution or melt ... 

Iron also exhibits single replacement reactions, precipitating less electropositive metals out of their salt solutions. Thus, sohd iron can reduce many metals, such as copper, silver, gold, mercury, tin and nickel ... 

Mercury dimethyl undergoes single replacement reactions with several metals such as alkali and alkaline earth metals, zinc, aluminum, tin, lead and bismuth forming their corresponding dialkyls. 

Violent reactions can occur with many metal hahdes. For example, with zinc halides or iron halides, single replacement reactions take place. Such potassium-metal halide mixtures can react violently when subjected to mechanical shock. 

The reactions of hydrogen and oxygen to form water and carbon and oxygen to yield carbon dioxide are examples of combination reactions. A combination or synthesis reaction results when two or more substances unite to form a compound. Many other types of reactions exist. Three other common types of reactions are decomposition, single replacement, and double replacement. 

In a single replacement reaction, one element replaces another element in a compound. An example of a single replacement is when sodium is added to water. The reaction of sodium and water is represented by the following chemical equation ... 

Simple Carbohydrate monosaccharides such as glucose, fructose, and galactose that cannot be broken down by water Single Replacement Reaction type of chemical reaction in which one element replaces another in a compound Smelting to melt an ore in order to refine a metal from the ore... 

In a single replacement reaction (sometimes referred to as a single displacement reaction), a single, more reactive element or group replaces a less reactive element or group, following the general pattern... 

Single replacement reactions in which metals replace other metals cire especially common. Not all single replacement reactions occur as written, though. You sometimes need to refer to a chart called the activity series to determine whether such a reaction will take place. 

Table 8-2 presents the activity series. To determine whether a single replacement reaction will occur, compare the two metals in the reaction ... 

Here are the completed, balanced versions of a series of single replacement reactions ... 

Zinc metal reacts spontaneously with an aqueous solution of copper sulfate when they re placed in direct contact. Zinc, being a more reactive metal than copper (it s higher on the activity series of metals presented in Chapter 8), displaces the copper ions in solution. The displaced copper deposits itself as pure copper metal on the surface of the dissolving zinc strip. At first, the reaction may appecir to be a simple single replacement reaction, but it s also a redox reaction. 

One alkyne will displace another from Pt(alkyne)(PR3)2 complexes, the order of alkyne displacement being C2H2 < alkylalkynes < arylalkynes < nitroalkynes. The reaction involves both a dissociative and an associative pathway. The reaction may not lead to a single replacement product in all cases. Thus cr-hydroxyalkynes lead to the formation of dialkynyl platinum(II) complexes.830... 

The ultimate goal of these studies was performing single replacement experiments, e.g., by reconstituting subunits containing puromycin-labeled S14 or L23 protein in place of unmodified S14 and L23. 

In a single displacement reaction, one element switches places with another element in a compound. The reactants in a single displacement reaction are an element and a compound, and the products are a different element and a different compound. A single displacement reaction can also be called a single replacement reaction. Look at this example of a single displacement reaction ... 

Single replacement reaction See single displacement reaction. 

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