Question

What is an example of an exothermic reaction?

Answer 1

Answer:

C + O₂ ------------> CO₂ + Heat + Light

Explanation:

Exothermic reactions are those reactions in which energy is given out. It is denoted by writing "+Heat" on the products side.

Some other examples are:

CH₄ + 2O₂ ------------> CO₂ + 2H₂O + Heat

C₆H₁₂O₆ + 6O₂ --------------------> 6CO₂ + 6H₂O + Energy (respiration)

Answer 2

An Exothermic reaction is a chemical reaction that involves the release of energy in the form of heat or light. These reactions are the opposite of endothermic reactions and can be expressed in a chemical equation as follows: Reactants → Products + Energy

An exothermic reaction is a reaction in which energy is released in the form of light or heat. Thus in an exothermic reaction, energy is transferred into the surroundings rather than taking energy from the surroundings as in an endothermic reaction. In an exothermic reaction, change in enthalpy ( ΔH) will be negative.

Examples:-

An example of a combustion reaction would be the combustion of methane which can be represented as follows:

CH4 + O2 → CO2 + H2O + Heat

Another example of a combustion reaction is the combustion of glucose, given by the following reaction:

C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy