In which of the following processes is the enthalpy change (ΔH) equal to the hea

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Question: In which of the following processes is the enthalpy change (ΔH) equal to the heat absorbed at constant pressure? (2019)

Options:

Correct Answer: Isobaric process

Exam Year: 2019

Solution:

In an isobaric process, the enthalpy change (ΔH) is equal to the heat absorbed or released at constant pressure.

In which of the following processes is the enthalpy change (ΔH) equal to the heat absorbed at constant pressure? (2019)

In which of the following processes is the enthalpy change (ΔH) equal to the heat absorbed at constant pressure? (2019)

Step 1: Understand what enthalpy change (ΔH) means. It is a measure of the total heat content of a system.
Step 2: Know that enthalpy change can occur during different processes, such as isobaric (constant pressure) and isochoric (constant volume).
Step 3: Recognize that in an isobaric process, the pressure remains constant while heat is added or removed from the system.
Step 4: Learn that during an isobaric process, the heat absorbed or released by the system is equal to the change in enthalpy (ΔH).
Step 5: Conclude that the answer to the question is that ΔH is equal to the heat absorbed at constant pressure specifically in an isobaric process.

Enthalpy Change – Enthalpy change (ΔH) is the heat content change of a system at constant pressure.
Isobaric Process – An isobaric process is a thermodynamic process in which the pressure remains constant.