Question

Applications of Jess's law

Answer 1

Explanation:

Hess's law.

In a chemical reaction, Hess’ law states that the change of enthalpy (it means, the heat of reaction under constant pressure) is independent of direction between the states of final and original. Also, this law requires the change in enthalpy (Δ H) for a reaction to be determined, even though it can not be measured directly.

Applications of Hess's Law:

• Thermochemical equations can be added subtracted or multiplied like ordinary algebraic equations.
• Hess's law is useful to calculate heats of many reactions which do not take place directly.
• It is useful to find out heats of extremely slow reaction.