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The root mean square speed of oxygen molecule (O₂) at a certain temperature is v. If the temperature is doubled and the oxygen gas dissociates into atomic oxygen, the rms speed would be
Options
(a) v
(b) √2 v
(c) 2v
(d) 2√2 v
Correct Answer:
2v
Explanation:
The rms speed is given by
v(rms) = √(3RT / M)
[v(rms)]o₂ = √(3RT / M) = √(3RT / M) = v
[v(rms)]o = √[3R(2T) / M] = 2 √(3RT / M) = 2v
Related Questions: - Which of the following physical quantities has neither dimensions nor unit
- The internal energy change in a system that has absorbed 2 kcals of heat
- Two rigid bodies A and B rotate with rotational kinetic energies Eᴀ and Eʙ
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Topics: Behavior of Perfect Gas and Kinetic Theory
(34)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following physical quantities has neither dimensions nor unit
- The internal energy change in a system that has absorbed 2 kcals of heat
- Two rigid bodies A and B rotate with rotational kinetic energies Eᴀ and Eʙ
- A flywheel rotating about a fixed axis has a kinetic energy of 360 J when
- A cycle wheel of radius 4 m completes one revolution in two seconds. Then acceleration
Topics: Behavior of Perfect Gas and Kinetic Theory (34)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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