Question

Consider the gases nitrogen (N₂) and

Nitrogen oxide (N₂O). Based on the
Information given in Tables 1 and 2, which
would you predict has a higher thermal
Conductivity at a constant temperature and
Pressure?
ON₂0 because it has a lower molecular mass
ON₂ Obecause it has a higher molecular mass
ON₂ because it has a lower molecular mass
N₂ because it has a higher molecular mass

Answer 1

Nitrogen (N₂) is predicted to have a higher thermal conductivity than nitrogen oxide (N₂O) because of its lower molecular mass and simpler molecular structure.

Step-by-step explanation:

You've asked which gas, nitrogen (N₂) or nitrogen oxide (N₂O), is likely to have a higher thermal conductivity at a constant temperature and pressure. Thermal conductivity in gases generally decreases with increasing molecular mass and increases with molecular simplicity and the speed of molecules. The molecular mass of N₂ (28 g/mol) is lower than that of N₂O (44 g/mol), and it is a simpler molecule in structure. Therefore, we would predict that N₂ has a higher thermal conductivity because it has a lower molecular mass.