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Types of chemical reactions - Coggle Diagram
Types of chemical reactions
1.Combination reaction
1.Combine together to form a single product is called a combination reaction
2.The chemical reactions, you can combine two or more reactants to form a new product. This reaction is classified as a combination reaction, which can also be referred to as a synthesis reaction.
3.The reactants, A and B, combine to form a new single product, AB, which is always a compound. An example of a combination reaction is when hydrogen and chlorine react to form hydrochloric acid:
4.The subscripts in the chemical reaction in this image refer to the states of matter. These states of matter can be classified as solid (s), liquid (l), gas (g) and an aqueous solution (aq). Aqueous is a substance that is dissolved in water.
2.Decomposition reaction
1.The reaction in which a single reactant breaks down to give two or more simpler products is called a decomposition reaction
2.Decomposition reaction are mostly endothermic in nature.In these reaction,energy in the form of heat,light or electricity is absorbed for breaking down the reactant.depending upon the form of energy required,decomposition reaction are further classified into following type:
1.Thermal decomposition reaction
2.Electrolytic decomposition reaction
3.photochemical decomposition reaction
3.Three type of decomposition reaction
CaCO3 → CaO + CO2 When heated Calcium Carbonate,decomposes into Calcium Oxide and Carbon Dioxide This process is employed in the manufacturing of quick lime which is an important component in industries.
2.Electrolytic decomposition reaction
An electrolytic decomposition reaction is a type of decomposition reaction in which the activation energy for decomposition Example of electrolytic decomposition reaction
Dissociation of water:2H2O→ 2H2 + O2
3.Photo decomposition/ photolytic decomposition/ photochemical decomposition
A photo decomposition is the type of decomposition reaction in which the reactant is broken down to its constituents by photon.Example of photo decomposition reaction
O3 + hν → O2 + O(1D)Photolysis occurs in the atmosphere wherein ozon molecules is broken down into oxygen molecule and atomic oxygen.
1.Example of Thermal decomposition reaction
3.Displacement reaction
3.similarly,zinc and lead can displace copper from its solution.This can be represeted as follows:
(a)CuSO4 +Zn→Cu +Znso4
(b)Pb +CuCl2→phCl2 +cu
As zinc and lead are more reactive then copper,thus they can displace copper from its compounds.
2.For example
A + B-C → A-C + B
2.The above equation exists when A is more reactive than B.
A and B have to be either:
(a)Halogens where C indicates a cation.
(b)Different metals wherein C indicates an anion.
1.A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecul. For instance, when Iron is added to a copper sulphate solution, it displaces the copper metal.
4.Double displacement reaction
1.A reaction in which two compound react to form two different compound by an exchange of ions is called double displacement reaction
2.Generally,in double displacement reaction,the reaction of two ions compound leads to the formation of an insoluble products called precipitate.
3.A reaction in which one of the products of the reaction get precipitated is called precipitation reaction
for examples
4.The reaction between silver nitrate and sodium chloride is a double displacement reaction The silver trades its nitrite ion for the sodium's chloride ion, causing the sodium to pick up the nitrate anion.
(a)AgNO3 + NaCl → AgCl + NaNO3
(b)BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2 NaCl(aq)
5.Oxidation-reduction reaction
1.oxidation means gaining oxygen in a chemical reaction We will be looking at oxidation and reduction from two different points of view.
(a)Oxidation and Reduction in terms of Oxygen transfer
(b)Oxidation and Reduction in terms of Electron transfer
Oxidation reaction
Reduction reaction
1.In Chemistry, it is referred to as the loss of oxygen when it is with respect to the oxygen transfer. It is the job of the reducing agent to remove the oxygen from another substance
2.Similarly, in the case of hydrogen transfer, it is the gain of hydrogen. That means it is reducing agent’s work to remove oxygen from one substance and hydrogen to.
