Which of the following would have the lowest average kinetic energy?

Cl2 gas at 35 °C

F2 gas at 15 °C

O2 gas at 25 °C

N2 gas at 50 °C

Temperature is defined as the average kinetic energy of the molecules in a sample. Because of that, we know that the sample that has the lowest temperature will have the smallest average kinetic energy. I hope this helps. Let me know in the comments if anything is unclear.

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Larus Larus · Answer 2 · 2019-07-20T12:29:02+02:00

Answer:

The correct answer is F2 gas at 15 degree C.

Explanation:

On the basis of the kinetic theory of gases, all the gases at a specific temperature possess the same average kinetic energy. The average kinetic energy of the gases can be determined with the help of the relation, K = 3R / 2NA * T

Here, K is the average kinetic energy,

R is the gas constant and NA is the Avogadro's number (6.023 * 10^23 atoms /mol)

T is the temperature in Kelvin

It is evident from the relation that K relies upon the temperature. Thus, F2 gas at 15 degree C exhibits the lowest average kinetic energy as it is at the lower temperature in comparison to the other gases.

Which of the following would have the lowest average kinetic energy? Cl2 gas at 35 °C F2 gas at 15 °C O2 gas at 25 °C N2 gas at 50 °C

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Which of the following would have the lowest average kinetic energy?

Cl2 gas at 35 °C

F2 gas at 15 °C

O2 gas at 25 °C

N2 gas at 50 °C