| ⇦ | 
| ⇨ |
Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is
Options
(a) ΔS system + ΔS surroundings > 0
(b) ΔS system – ΔS surroundings > 0
(c) ΔS system > 0 only
(d) ΔS surroundings > 0 only
Correct Answer:
ΔS system + ΔS surroundings > 0
Explanation:
ΔS = Rln V₂/V₁,
Here the volume of gas increases from V₁ to V₂ at consant temperature T. The total increase in entropy of the system and its surroundings during the spontaneous process of expansion considered above is, thus R ln (V₂/V₁).Since V₂ > V₁, it is obvious that the spontaneous (irreversible) isothermal expansion of a gas is accompanied by a increase in the entropy of the system and its surroundings considered together.
ΔS(sys) + ΔS(surr > 0.
Related Questions: - CO₂ is liberated on adding sodium carbonate to a carboxylic acid.The carbon
- Which one of the following has maximum laevorotatory nature
- Copper pyrite, the chief ore of copper, is
- Dinitrogen and dioxygen are main constituents of air but these do not react
- Oxidation state of sulphur in S₈, H₂S and S₂F₂ is
Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- CO₂ is liberated on adding sodium carbonate to a carboxylic acid.The carbon
- Which one of the following has maximum laevorotatory nature
- Copper pyrite, the chief ore of copper, is
- Dinitrogen and dioxygen are main constituents of air but these do not react
- Oxidation state of sulphur in S₈, H₂S and S₂F₂ is
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply