Question

Burning of coal is which type of reaction?

Answer 1

Hint:This question gives the knowledge about the oxidation reactions. An oxidation reaction is the reaction in which the oxidation number of atoms, ions or molecules in a chemical reaction changes by losing electrons.

Complete step by step answer:
Burning of coal undergoes combustion reaction. Combustion reaction is a type of reaction in which chemical species experiences oxidation by undergoing a reaction with the oxidizing agent which results in the emission of energy in the form of heat. It is an exothermic process.
The reaction for burning of coal is as follows:
$C + {O_2} \to C{O_2}$
In this reaction, carbon is heated in the presence of oxygen which leads to the formation of carbon dioxide gas with the emission of heat energy.

Additional information:
An oxidation reaction is the reaction in which the oxidation number of atoms, ions or molecules in a chemical reaction changes by losing electrons. Oxidation is also defined as loss of hydrogen.
The most important example of oxidation reaction is combustion reaction. . Combustion reaction is a type of reaction in which chemical species experiences oxidation by undergoing a reaction with the oxidizing agent which results in the emission of energy in the form of heat. Combustion reaction is an exothermic process.
The exothermic reactions are the reactions in which emission of heat energy takes place. This type of reaction generally takes place in rusting of iron, breaking of chemical bonds and so forth.
Characteristics of exothermic reactions are as follows:
$1$. In exothermic reactions, the energy is generally emitted from the system.
$2$. In energy profile diagrams of exothermic reactions, the enthalpy of products is lower than the enthalpy of products.
$3$. The change in enthalpy possesses negative value.
$4$. The temperature increases as the reaction moves forward.

Note:
Always remember that an oxidation reaction is the reaction in which the oxidation number of atoms, ions or molecules in a chemical reaction changes by losing electrons. Oxidation reaction is also defined as loss of hydrogen.