Examples of reversible and irreversible reaction
Answers
Answer:
Explanation:
Irreversible Reactions :-
Some chemical reactions can occur in only one direction. These reactions are called irreversible reactions. The reactants can change to the products, but the products cannot change back to the reactants. These reactions are like making a cake. The ingredients of a cake—such as eggs and flour—are the reactants. They are mixed together and baked to form the cake, which is the product. The cake can’t be “unbaked” and “unmixed” to change it back to the raw eggs, flour, and other ingredients. So making a cake is irreversible.
Combustion reactions are generally irreversible. Combustion occurs whenever a fuel burns. In this type of reaction, the fuel may combine with oxygen (in the air) and produces carbon dioxide and water vapor. The chemical equation for a combustion reaction is:
Fuel + O2 → CO2 + H2O
In a complete combustion reaction, fuel and oxygen are the reactants and the products are carbon dioxide and water. These two products cannot react to reform the fuel and oxygen, so the reaction is irreversible. The one-way arrow in the equation shows that the reaction can go in only one direction.
Reversible Reactions:-
Many chemical reactions can occur in both directions. These reactions are called reversible reactions. Not only can the reactants change to the products, but the products can change back to the reactants, at least under certain conditions. Consider again the reaction in which hydrogen gas and oxygen gas combine to produce water. This reaction is reversible if an electric current is applied to the water that is produced. You can see how this is done in the Figure below. The current causes the water molecules to break down to individual hydrogen and oxygen atoms. Then these atoms recombine to form molecules of hydrogen gas and oxygen gas.
H2 + O2 ---> H2O
its a reversible reaction
Answer:
a reaction which can take place again and again is called reversible reaction i.e burning of candle.
A reaction which can't be reversible is called irreversible reaction i.e milk into curd