Question

$E_0$ and $E_h$ respectively represent the aver age kinetic energy of a molecule of oxygen and hydrogen . If the two gases are at the same temperature , which of the following statements is true ?

• A. $E_0 > E_h$
• B. $E_0 = E_h$
• C. $E_0 < E_h$
• D. Nothing can be said about the magnitude of $E_0$ and $E_h$ as the information given is in sufficient

Answer 1

Answer: (B)

The average kinetic energy of gas molecule, $E=\frac{3}{2} K_{B} T$
where $K_{B}=$ Beltzmann's constant
$T=$ absolute temperature
ds the question mentioned, temperature of two gas mole cules of oxygen and hydrogen is same.
$\therefore E_{0}$ be average kinetic energy of oxygen
$E_{H}$ be average kinetic energy of hydragen
$\therefore E_{0}=E_{H}$