Recognize muzic-ivan.infoical reactions as single-replacement reactions Use an task series to predict whether single-replacement reactions will certainly occur.

You are watching: Which of the following are single displacement reactions

A single-replacement reactivity is a muzic-ivan.infoical reaction in which one element is substituted for one more element in a compound, generating a brand-new facet and also a brand-new compound as assets. For instance,

is an example of a single-replacement reactivity. The hydrogen atoms in (ceHCl) are reput by (ceZn) atoms, and also in the process a brand-new element-hydrogen-is created. Anvarious other example of a single-replacement reactivity is

Here the negatively charged ion alters from chloride to fluoride. A typical characteristic of a single-replacement reaction is that tbelow is one aspect as a reactant and an additional aspect as a product.

Not all proposed single-replacement reactions will certainly take place in between two given reactants. This is a lot of quickly demonstrated via fluorine, chlorine, bromine, and iodine. Collectively, these aspects are dubbed the halogens and also are in the next-to-last column on the routine table (Figure (PageIndex1)). The aspects on peak of the column will certainly relocation the facets below them on the routine table but not the other method approximately. Hence, the reaction represented by

will certainly occur, yet the reaction

will certainly not bereason bromine is listed below fluorine on the routine table. This is simply one of many kind of ways the periodic table helps us understand muzic-ivan.infoistry.

Figure (PageIndex1): Halogens on the Periodic Table. The halogens are the elements in the next-to-last column on the regular table.

Exercise (PageIndex1)

Will a single-replacement reaction occur? If so, determine the assets.


Yes; FeCl2 and also I2

muzic-ivan.infoical retask patterns are easy to predict when replacing anions in easy ionic compounds-ssuggest use their family member positions on the routine table. However, as soon as replacing the cations, the patterns are not as straightforward. This is partly bereason tright here are so many type of facets that have the right to develop cations; an aspect in one column on the periodic table might relocation an additional facet surrounding, or it might not. A list called the task series does the very same point the periodic table does for halogens: it lists the elements that will certainly rearea aspects below them in single-replacement reactions. A easy task series is presented listed below.

Activity Series for Cation Replacement in Single-Replacement Reactions

Li K Ba Sr Ca Na Mg Al Mn Zn Cr Fe Ni Sn Pb H2 Cu Hg Ag Pd Pt Au

Using the activity series is equivalent to making use of the positions of the halogens on the regular table. An element on optimal will rearea an element listed below it in compounds undergoing a single-replacement reactivity. Elements will not relocation facets above them in compounds.

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Exercise (PageIndex2)

Use the task series to predict the commodities, if any type of, of this equation.


Mg3(PO4)2 and Al

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