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

₹0.0

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

Options:

Correct Answer: ΔH = Q

Solution:

At constant pressure, the change in enthalpy (ΔH) is equal to the heat exchanged (Q).

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

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

Step 1: Understand what enthalpy (H) is. It is a measure of the total energy of a system, including internal energy and the energy required to make room for it by displacing its environment.
Step 2: Know that enthalpy change (ΔH) refers to the difference in enthalpy between the final and initial states of a system.
Step 3: Recognize that heat (Q) is the energy transferred between a system and its surroundings due to a temperature difference.
Step 4: Learn that at constant pressure, the heat exchanged (Q) during a process is directly related to the change in enthalpy (ΔH).
Step 5: Conclude that when pressure remains constant, the amount of heat added or removed from the system is equal to the change in enthalpy: ΔH = Q.

No concepts available.