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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.
Related Questions: - Which of the following will show a negative deviation from Raoult’s law
- 1.520 g of hydroxide of a metal on ignition gave 0.995 g of oxide
- If 1 mole of an ideal gas expands isothermally at 37⁰C from 15 litres
- Among the following , the one which reacts most readily with ethanol is
- In the reaction of H₂O₂ with acidified KMnO₄
Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following will show a negative deviation from Raoult’s law
- 1.520 g of hydroxide of a metal on ignition gave 0.995 g of oxide
- If 1 mole of an ideal gas expands isothermally at 37⁰C from 15 litres
- Among the following , the one which reacts most readily with ethanol is
- In the reaction of H₂O₂ with acidified KMnO₄
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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