MHT CET 2025 Chemistry question
Calculate the entropy change of surrounding if 2 moles of and 1 mole of gas combine to form 2 moles of liquid water by releasing 525 kJ heat to surrounding at constant pressure and at 300 K.
Answer: (B)
Solution
The heat released by the system is absorbed by the surroundings, so (at constant pressure the heat exchanged is the enthalpy change). The surroundings are a large reservoir at constant temperature, so
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