In thermodynamics, what does the term 'enthalpy' (H) represent? (2020)

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Question: In thermodynamics, what does the term \'enthalpy\' (H) represent? (2020)

Options:

Correct Answer: Heat content of the system at constant pressure

Exam Year: 2020

Solution:

Enthalpy (H) represents the heat content of the system at constant pressure, defined as H = U + PV.

In thermodynamics, what does the term 'enthalpy' (H) represent? (2020)

In thermodynamics, what does the term 'enthalpy' (H) represent? (2020)

Step 1: Understand that enthalpy is a term used in thermodynamics, which is the study of heat and energy.
Step 2: Know that enthalpy is represented by the letter 'H'.
Step 3: Realize that enthalpy measures the total heat content of a system.
Step 4: Remember that enthalpy is specifically measured at constant pressure.
Step 5: Learn the formula for enthalpy: H = U + PV, where 'U' is the internal energy, 'P' is the pressure, and 'V' is the volume of the system.

Enthalpy – Enthalpy (H) is a thermodynamic quantity that represents the total heat content of a system at constant pressure, calculated as the sum of internal energy (U) and the product of pressure (P) and volume (V).