Chemistry - Ideal Gas Question with Solution | TestHub

Kinetic energies per molecule will be same because it is proportional to absolute temperature only.
$\frac{{\mathrm{d}}_{{\mathrm{N}}_2}}{{\mathrm{d}}_{{\mathrm{CO}}_2}}=\frac{{\mathrm{M}}_{{\mathrm{N}}_2}}{{\mathrm{M}}_{{\mathrm{CO}}_2}}=\frac{28}{44}$i.e.,${\text{d}}_{{\text{N}}_2}<{\text{d}}_{\text{C}{\text{O}}_2}$.
Total translational kinetic energy will also be same because at same temperature & pressure number of molecules present in same volume would be same (according to Avogadro's Law)
Hint : rms speed has relation,$\frac{{\mathrm{U}}_{{\mathrm{SO}}_2}}{{\mathrm{U}}_{{\mathrm{O}}_2}}=\sqrt{\frac{{\mathrm{M}}_{{\mathrm{O}}_2}{\mathrm{T}}_{{\mathrm{SO}}_2}}{{\mathrm{M}}_{{\mathrm{SO}}_2}{\mathrm{T}}_{{\mathrm{O}}_2}}}$