Question

What is meant by the Hess’s Law?

Answer 1

We should first be aware of Hess's law. Hess’s law is also known as the Hess's law of constant heat summation or also known as Hess's law of heat summation. This laws was given by a Swiss-born Russian chemist, Germain Henri Hess in 1840.

Complete step-by-step answer:
Hess’s Law states that total enthalpy change for the reaction is the sum of all the charges, regardless of the multiple steps or the path taken by the chemical reaction. It can also be seen as an application of the principles of conservation of energy.

At constant pressure, Heat content of a system is termed as Enthalpy. Enthalpy change is the same as the heat that is being absorbed or released by a reaction at a constant pressure.

Main application of Hess’s law
-This law is generally used to determine the overall energy which is generally required for a chemical reaction, when it is divided into several small steps in order to be individually chartered.
-It helps us to create or form new chemical reactions whose enthalpy change can be calculated, rather by directly measuring it.
-The use of enthalpy in real life is that change is enthalpy applied to the hand warmer and refrigerator.

Note: Hess's Law has many applications in real life. Every chemical reaction generally uses this equation, and industries that need to use reactions can see if this is the most effective method to produce the products which is generally based on the energy needed or released.