What do you mean by endothermic reaction? Give any two example with balanced equation?

Question

Answer

Endothermic reaction is the reaction which absorbs heat from the surroundings. So, the surrounding temperature is decreased by endothermic reaction.For example, Melting of ice is endothermic reaction becauseIce +  heat =liquid water

Answer

Reactions in which heat is given out along with the products are called exothermic reactions.For example 1) Burning of methane gas releases a large amount of energy. Hence it is an exothermic reaction. CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)

Answer

Endothermic Reaction:
An endothermic reaction is a chemical reaction that absorbs heat energy from its surroundings. In these reactions, the products have more energy than the reactants, and therefore, energy is required for the reaction to occur. This energy is usually supplied in the form of heat, but it can also be supplied through other means such as electricity or light.

Examples of Endothermic Reactions:
1. Photosynthesis:
Photosynthesis is an essential endothermic reaction that occurs in plants and some microorganisms. It is the process by which plants convert carbon dioxide and water into glucose and oxygen, using sunlight as the primary energy source. The balanced equation for photosynthesis is as follows:
6CO2 + 6H2O + energy (sunlight) → C6H12O6 + 6O2

In this reaction, energy is absorbed from sunlight to convert carbon dioxide and water into glucose and oxygen. The energy absorbed during photosynthesis is stored in the chemical bonds of glucose, which can be later utilized by the plant for growth and other metabolic processes.

2. Dissolution of Ammonium Nitrate:
The dissolution of ammonium nitrate in water is another example of an endothermic reaction. Ammonium nitrate is a white crystalline compound commonly used as a fertilizer. When it dissolves in water, it absorbs heat from the surroundings, causing a decrease in temperature. The balanced equation for the dissolution of ammonium nitrate is as follows:
NH4NO3 + H2O → NH4+ + NO3- + energy

In this reaction, energy is absorbed from the surroundings to break the ionic bonds between the ammonium and nitrate ions, resulting in the dissociation of ammonium nitrate into its respective ions.

Conclusion:
Endothermic reactions are characterized by the absorption of heat energy from the surroundings. They are important in various biological and chemical processes. The examples mentioned above illustrate the concept of endothermic reactions, where energy is required for the reactions to occur. Understanding endothermic reactions is crucial in fields such as biology, chemistry, and environmental science, as it helps in comprehending the energy changes that take place during these reactions.

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