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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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50 mL of water takes 5 min to evaporate from a vessel on a heater connected to an electric source which delivers 400 W. The enthalpy of vaporisation of water is
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Correct option: B
43.2 kJ per mol
Option B (43.2 kJ per mol) is correct because it is calculated by finding the total energy used for vaporization and then converting it to per mole.
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For which of the process, ∆S is negative?
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Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is
Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is