What is an example of an exchange reaction?

In this article, “exchange reaction example”, different types of examples with detailed explanations are discussed below.

The examples are-

1. Precipitation Reaction between Sodium Chloride and Silver Nitrate
2. Precipitation Reaction between Calcium Chloride and Potassium Hydroxide
3. Neutralization Reaction
4. Gas Evolution Reaction between Zinc and Sulfuric Acid
5. Gas Evolution Reaction between Sodium Sulfide and Hydrochloric Acid
6. Ion Exchange Reaction
7. Exchange Reaction between Ester and Carboxylic Acid
8. Hydrogen Isotope Exchange Reaction
9. Metal Halogen Exchange Reaction

What is an Exchange Reaction?

Exchange reaction is defined as one type of chemical reaction in which cations and anions present in reactants are interchanged in product side. Products that are formed due to exchange reaction must be electrically neutral species.

Stability on the product side with comparing to reactant side is the driving force of exchange reaction.

In an exchange reaction both decomposition and synthesis take place that is bond breaking and bond formation occur simultaneously.

Precipitation Reaction between Sodium Chloride and Silver Nitrate

Precipitation reaction is one type of double exchange reaction in which two reactants (basically ionic compound) in aqueous solution combine with each other and an insoluble salt is obtained as product. This insoluble salt cannot be dissolved in solution and remains as precipitate.

For example-

NaCl (aq) + AgNO3 (aq) → NaNO3 (aq)+ AgCl (s)

In this above reaction sodium chloride (NaCl) reacts with silver nitrate (AgNO3) to form the white precipitate of silver chloride (AgCl) and soluble sodium nitrate (NaNO3).

Precipitation reaction between Calcium Chloride and Potassium Hydroxide

In this type of precipitation reaction Ca2+ from calcium chloride and OH- from KOH combine to form the precipitate of calcium hydroxide, Ca(OH)2.

CaCl2 (aq) + KOH (aq) → Ca(OH)2 (s) + KCl (aq)

Neutralization Reaction

Neutralization reaction takes place between acid and base. In this exchange reaction, acid gets neutralized and form salt along with water. For example,

HCl (aq) + KOH (aq) → KCl (aq) + H2O (l)

In this exchange reaction, H+ ion of hydrochloric acid is exchanged with the OH– ion of potassium hydroxide and chloride ion (Cl–) from HCl is exchanged with K+ ion comes from KOH.

To know more please follow: 5 Polar Covalent Bond Examples: Detailed Insights And Facts

Gas Evolution Reaction between Zinc and Concentrated Sulphuric Acid

A gas evolution reaction is defined as one of the exchange reactions in which gas (oxygen, nitrogen, carbon dioxide) is obtained as one product.

There are numerous examples in which gaseous product is obtained.

Zn + H2SO4 → ZnSO4 + H2

When any metal reacts with any concentrated acid, hydrogen gas is evolved from reaction medium.

Cation exchange and anion exchange are two types of ion exchange reaction. This type of exchange reaction converts one material to another species. Difference in solubility product is the driving force of ion exchange reaction.

For example, ion exchange resin is a reversible exchange reaction in which ions are eliminated from solution and exchanged with other ions having similar electric charge.

To know more please go through: N2 polar or nonpolar: Why, How, Characteristics, And Detailed Facts

This is also an example of exchange reaction in which gas is evolved from reaction medium as a product. In this case dilute hydrochloric acid reacts with sodium sulfide (Na2S) and sulphur dioxide gas (SO2) is evolved along with sodium chloride salt.

Na2SO3 + 2HCl → 2NaCl + H2O + SO2

Exchange Reaction between Ester and Carboxyl Group

This type of exchange reaction is known as acidolysis and opposite of alcoholysis reaction.  In this reaction, oil combines with dibasic acid in first stage and in 2nd stage polyl is participated in reaction at high temperature without catalyst. This method of acidolysis is limited in polybasic acid like terephthalic acid, isophthalic acid. These acids remain insoluble in monoglyceride until the completion of esterification.

To know more please follow: Properties of Peptide bond: Detailed Fact and Comparative Analysis

Hydrogen Isotope Exchange Reaction

Isotopic exchange reaction is one type of exchange reaction in which ion and molecule participate and they have the ability to transfer heavy isotope between molecules at low temperature in the energy difference of energy equal to zero point energy between reactant and product.

Hydrogen isotope exchange reaction is a well known example of isotope exchange reaction.

H3+ + HD → H2D+ + H2

This is an exothermic reaction and change of enthalpy is negative.

Metal Halogen Exchange Reaction

Organic halide is converted into organometallic product through metal halogen exchange reaction. Generally, electropositive metal Li, Na, Mg are used as metal and chlorine, bromine, iodine are used as halogen in this exchange reaction.

For example, lithium -halogen exchange reaction can be considered. Lithium is reacted with alkyl halide to form organolithium compounds.

2Li + R-X → Li-X + R-Li

To know more please check: Is HBr Ionic or Covalent : Why? How, Characteristics and Detailed Facts

Frequently Asked Questions (FAQ)

When exchange reaction takes place?

Answer:  Exchange reaction between two reactants occur when two ions present in aqueous solution generates insoluble compound, weak or nonelectrolytes.

Is exchange reaction reversible?

Answer: In any reversible reaction, both the product formation rate and reactant decomposition rate maintain a chemical equilibrium. Thus, most of the exchange reactions are reversible.

What is the difference between an addition reaction and exchange reaction?

Answer: In addition reaction two of the reactants combine with each other and form larger molecules but in exchange reaction basically cation and anion of reactants are exchange with each other in aqueous solution.