MCQ
The $r.m.s.$ velocity will be greater for
- ✓Hydrogen
- BOxygen
- CEqual for both
- DNothing is definite
✓
Answer
Correct option: A.
Hydrogen
a
$(R \cdot M \cdot S)=\sqrt{\frac{3 R T}{M}}$
$(R \cdot M \cdot S)=\sqrt{\frac{3 R T}{M}}$
$\therefore(R \cdot M \cdot S) \propto \frac{1}{\sqrt{M}} \quad$ [when other terms are constant]
Out of Hydrogen and oxygen, hydrogen has the lower molecular mass. Thus, $(RMS)$ velocity will be greater for hydrogen.
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