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23/12/2021 11:53 am
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Compare the RMS speeds of the gases at same temperature Options
(a) CO2 > O2 > H2
(b) CO2 <O2 <H2
(c) CO2 < O2 = H2
(d) CO2 > O2 = H2
1 Answer
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23/12/2021 12:11 pm
Answer (b) CO2 < O2 < H2
Explanation
Vrms = \(\sqrt{\frac{3RT}{M}}\)
Molecular mass of CO2 = 44 gm
Molecular mass of O2 = 32 gm
Molecular mass of H2 = 2 gm
Vrms ∝ \(\frac{1}{\sqrt{M}}\)
If T → Same for all gases
Hence,
(Vrms)CO2 < (Vrms)O2 < (Vrms)H2
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