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Two moles of an ideal gas expand spontaneously into a vacuum. The work done is
Options
(a) 2 joules
(b) 4 joules
(c) zero
(d) infinite
Correct Answer:
zero
Explanation:
In a free expansion , gas is allowed to expand into a vacuum. This happens quickly,so there is no heat transferred. No work is done,because the gas does not displace anything. According to the first law, this means that ΔE initial = 0. There is no change in internal energy, so the temperature stays the same.
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- Nitroethane can exhibit one of the following kind of isomerism
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Solution of 0.1 N NH₄OH and 0.1 N NH₄Cl has pH 9.25 . Then fine out pKb of NH₄OH
- Nitroethane can exhibit one of the following kind of isomerism
- The rate of reaction between two reactants A and B decreases by a factor of
- The number of valence electrons in 4.2g of N³⁻ ion is
- Reaction BaO₂(s) ⇌ BaO(s) + O₂(g) ; ΔH = +ve.In equilibrium condition,
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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