What is the enthalpy change for the reaction at constant pressure?

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Question: What is the enthalpy change for the reaction at constant pressure?

Options:

Correct Answer: ΔH = ΔU + PΔV

Solution:

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

What is the enthalpy change for the reaction at constant pressure?

What is the enthalpy change for the reaction at constant pressure?

Step 1: Understand that enthalpy change (ΔH) is a measure of heat change in a reaction at constant pressure.
Step 2: Know that the formula for enthalpy change at constant pressure is ΔH = ΔU + PΔV.
Step 3: Identify ΔU, which is the change in internal energy of the system.
Step 4: Identify P, which is the pressure of the system (constant pressure).
Step 5: Identify ΔV, which is the change in volume of the system during the reaction.
Step 6: Calculate ΔU, P, and ΔV based on the specific reaction you are studying.
Step 7: Plug the values of ΔU, P, and ΔV into the formula ΔH = ΔU + PΔV to find the enthalpy change.

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