is Chemistry QPACK #44 wrong?

[br2pi5]

---

Members do not see this ad.

Hello!
I was doing the Qpack and ran into this question:
"what bonding accounts for the expected increase in energy density of solid nitrogen as compared to methanol?" the best answer was: "solid nitrogen only contains covalent bonds; methanol has covalent bonds within each molecule and weak intermolecular interactions"
the weak part threw me off because I always though H-bonding was a strong intermolecular force. Am I wrong in thinking this?

Thank you!

 

[BTC0821]

Covalent bonds are stronger than hydrogen bonds. Methanol is made of single bonds whereas nitrogen gas has a triple bond. Hydrogen bonds are considered strong forces when compared to van der waals forces, but are considered weak when compared to covalent and ionic bonds. This is because hydrogen bonds are the strongest intermolecular forces, and since intramolecular forces are stronger than intermolecular forces, a greater amount of intramolecular forces are going to contribute more heavily than an additional intermolecular force (H-bonding) at the cost of 2 extra intramolecular bonds (covalent bonding) as seen in N2 gas.

 

[br2pi5]

Covalent bonds are stronger than hydrogen bonds. Methanol is made of single bonds whereas nitrogen gas has a triple bond. Hydrogen bonds are considered strong forces when compared to van der waals forces, but are considered weak when compared to covalent and ionic bonds. This is because hydrogen bonds are the strongest intermolecular forces, and since intramolecular forces are stronger than intermolecular forces, a greater amount of intramolecular forces are going to contribute more heavily than an additional intermolecular force (H-bonding) at the cost of 2 extra intramolecular bonds (covalent bonding) as seen in N2 gas.

perfectly explained, thank you so much!