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MHT CET Chemistry question

ChemistryThermodynamicsMHT CET

50 mL of water takes 5 minutes to evaporate from a vessel on a heater connected to an electric source which delivers 400 W. The enthalpy of vaporization of water is

Answer: (B)

Solution

Heat supplied = 400 W x 300 s = 120 kJ for 50 g = 2.78 mol of water, so =

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Question ID VK-064469