Same chapter3 marksDifficulty: Medium
State the relation between Gibbs energy, enthalpy and entropy, and the condition for a spontaneous process.
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3 marksDifficulty: Medium
Distinguish between an open, a closed and an isolated system, with one example of each.
Original Khojo Papers practice question — not from a past board paper.
Answer
An open system exchanges both matter and energy with its surroundings, as an open beaker of boiling water does. A closed system exchanges energy but not matter, as a sealed flask does. An isolated system exchanges neither, which a well-made thermos flask approximates.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The universe as a whole is treated as an isolated system.
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