Chemistry, asked by sahiltodkar, 1 month ago

write the statement of a) first law of thermodynamics b)hess's law of constant heat summation​

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Answered by Anonymous
4

Answer:

a) The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic processes, distinguishing two kinds of transfer of energy, as heat and as thermodynamic work, and relating them to a function of a body's state, called Internal energy

b) Hess's Law of Constant Heat Summation (or just Hess's Law) states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes. This law is a manifestation that enthalpy is a state function.

Explanation:

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Answered by renukaparmar2709
2

Answer:

A) First Law of Thermodynamics

   The energy of an isolated system is constant.

B) Hess's Law of constant Heat Summation

   If a reaction takes place in several steps  then its standard reaction         enthalpy is the  sum of the standard enthalpies of the  intermediate reactions into which the  overall reaction may be divided at the same  temperature

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