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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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- The standard emf for the cell reaction, 2Cu⁺(aq) → Cu(s) + Cu²⁺(aq)
- D(+)-glucose reacts with hydroxyl amine and yields an oxime.
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- ΔG = ΔH – TΔS was given by
- The standard emf for the cell reaction, 2Cu⁺(aq) → Cu(s) + Cu²⁺(aq)
- D(+)-glucose reacts with hydroxyl amine and yields an oxime.
- The cell used for the electrolysis of fused NaCl is
- The four bonds in methane are directed in space with an angle of
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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