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

Practice Questions

Q1
What is the enthalpy change for the reaction at constant pressure?
  1. ΔH = ΔU + PΔV
  2. ΔH = ΔU - PΔV
  3. ΔH = ΔU + VΔP
  4. ΔH = ΔU - VΔP

Questions & Step-by-Step Solutions

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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