Hi Dr. Uma,
I was wondering about the question linked to this post. Somehow I keep getting around 1100 kJ, however, the answer says it is 2200 kJ. Screenshot 2025-01-20 at 1.34.42 PM.png
Let us check
81g HF * 1mol /20g HF * 540kJ /2 mol HF
Yes you are right it is 1100 kJ