In thermodynamics, what does the term 'enthalpy' refer to?
Practice Questions
1 question
Q1
In thermodynamics, what does the term 'enthalpy' refer to?
Internal energy plus pressure times volume
Internal energy minus pressure times volume
Heat content of a system
Work done by a system
Enthalpy is defined as H = U + PV, where U is internal energy, P is pressure, and V is volume.
Questions & Step-by-step Solutions
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Q
Q: In thermodynamics, what does the term 'enthalpy' refer to?
Solution: Enthalpy is defined as H = U + PV, where U is internal energy, P is pressure, and V is volume.
Steps: 6
Step 1: Understand that enthalpy is a concept in thermodynamics, which is the study of heat and energy.
Step 2: Know that enthalpy is represented by the letter 'H'.
Step 3: Learn the formula for enthalpy: H = U + PV.
Step 4: Identify what each symbol in the formula means: 'U' is internal energy, 'P' is pressure, and 'V' is volume.
Step 5: Realize that internal energy (U) is the energy stored within a system, pressure (P) is the force exerted by the system's particles, and volume (V) is the space the system occupies.
Step 6: Understand that enthalpy helps us measure the total energy of a system, including both its internal energy and the energy associated with its pressure and volume.
