Question

Which of the following expressions correctly represents the relationship between the average molar kinetic energy, , of CO and $N _ { 2 }$ molecules at the same temperature.

• A. $\overline { K E } _ { C O } = \overline { K E } _ { N _ { 2 } }$
• B. $\overline { K E } _ { C O } > \overline { K E } _ { N _ { 2 } }$
• C. $\overline { K E } _ { C O } < \overline { K E } _ { N _ { 2 } }$
• D. Cannot be predicted unless the volumes of the gases are given

Answer 1

Answer: (A)

$\overline { K E } _ { C O } = \overline { K E } _ { N _ { 2 } }$

Answer 2

For same temp. kinetic energies would be equal for all molecules, what ever their molecular weights will be, it doesn't matter.