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Which of the following molecules has the largest root mean square velocity at 25°C
Options
(a) NH₃
(b) SO₂
(c) H₂S
(d) CO₂
Correct Answer:
NH₃
Explanation:
Temperature= 25⁰C, R.M.S velocity (ν r.m.s) = √(3RT / M ) ∝ √(1/M) .
(where M is molecular weight). We also known that molecular weights of SO₂, CO₂, NH₃, H₂S are 64 , 44 , 17 , 34 respectively .Therefore NH₃ molecule has the largest root mean square velocity, because of the least molecular weight.
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Topics: States of Matter Gases and Liquids
(80)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Deficiency of vitamine B₁ causes the disease
- Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the
- The ozone layer forms naturally by
- Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
- Gas A is bubbled through slacked lime, a white precipitate is formed.
Topics: States of Matter Gases and Liquids (80)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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