What is the relationship between enthalpy change and internal energy change at c

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Question: What is the relationship between enthalpy change and internal energy change at constant pressure?

Options:

Correct Answer: ΔH = ΔU + PΔV

Solution:

At constant pressure, the relationship is given by ΔH = ΔU + PΔV.

What is the relationship between enthalpy change and internal energy change at constant pressure?

What is the relationship between enthalpy change and internal energy change at constant pressure?

Correct Answer: ΔH = ΔU + PΔV

Step 1: Understand that enthalpy (H) is a measure of total energy in a system, including internal energy (U) and the energy needed to make space for the system (PV).
Step 2: Recognize that at constant pressure, the change in enthalpy (ΔH) can be calculated using the formula ΔH = ΔU + PΔV.
Step 3: Identify that ΔU is the change in internal energy, P is the pressure, and ΔV is the change in volume of the system.
Step 4: Realize that this formula shows how changes in internal energy and volume at constant pressure affect the overall energy change (enthalpy) of the system.

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