The molecules of a given mass of a gas have RMS speed of 200 m/s at 300 K and 1,00,000 bar pressure. When the absolute temperature is doubled and the pressure is halved, the RMS speed of molecules wil

Question

The molecules of a given mass of a gas have RMS speed of 200 m/s at 300 K and 1,00,000 bar pressure. When the absolute temperature is doubled and the pressure is halved, the RMS speed of molecules will become

Prashant Kotian · Accepted Answer

Correct answer: D. RMS speed is ∝ √(T) and independent of pressure. Since absolute temperature is doubled, u_rms' = 200 * √(2) m/s .

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