Why is enthalpy considered more useful than internal energy in chemical reactions?

Solution

Internal energy (U) and enthalpy (H) are measured by keeping constant volume and pressure respectively. Since most of the reactions occur under atmospheric pressure, so enthalpy is more useful than internal energy in chemical reactions.

Some More Questions From Thermodynamics Chapter

Why all living systems need to be 'open systems'?

Define state variables of a system.

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Thermodynamics

Why is enthalpy considered more useful than internal energy in chemical reactions?

Some More Questions From Thermodynamics Chapter

Why all living systems need to be 'open systems'?

Define state variables of a system.

From thermodynamic point of view, to which system the animals and plants belong?

What is a state function?

A thermodynamic state function is a quantity

What is reversible process in thermodynamics?

Define irreversible change.

Name the variable that is kept constant in isochoric process and isobaric process.

Give one difference between an isothermal and an adiabatic process.

For the process to occur under adiabatic conditions, the correct condition is

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