TS EAMCET · Chemistry · States of Matter
Helium molecule is two times heavier than hydrogen molecule at \(298 \mathrm{~K}\). According to kinetic theory, the average kinetic energy of helium at \(298 \mathrm{~K}\) is
- A wo times higher than a hydrogen molecule
- B four times higher than a hydrogen molecule
- C same as that of a hydrogen molecule
- D half of a hydrogen molecule
Answer & Solution
Correct Answer
(C) same as that of a hydrogen molecule
Step-by-step Solution
Detailed explanation
Average kinetic energy of gas molecules depend upon temperature and not on the nature of gas. Average kinetic energy \(=(3 / 2) K T\) Thus, hydrogen and helium have same kinetic energy at same temperature.
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