WBJEE · Chemistry · States of Matter
Amongst the following, which should have the highest rms speed at the same temperature?
- A \(\mathrm{SO}_{2}\)
- B \(\mathrm{CO}_{2}\)
- C \(\mathrm{O}_{2}\)
- D \(\mathrm{H}_{2}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{H}_{2}\)
Step-by-step Solution
Detailed explanation
\(\because\) rms velocity \((v_{rms}) \propto \sqrt{\frac{1}{M}}\). Thus, smaller the mass, more will be the rms speed. \(\mathrm{H}_{2}\) has minimum molar mass, So it has highest value of rms speed.
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