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When 1 kg of water at 373 k, is converted into steam how much amount of heat energy is required?(a) 22600 KJ(b) 226 KJ(c) 2260 KJ(d) 22.6 KJI have been asked this question in an interview for internship.This interesting question is from Thermodynamics topic in portion Thermodynamics of Chemistry – Class 11

Answer»

Right option is (c) 2260 KJ

For EXPLANATION: The latent HEAT of VAPORIZATION of water is 2260 KJ/Kg. The heat that is REQUIRED to convert water at 373 K to steam is given by Q = mL, where m = mass of the water and L = latent heat vaporization of water; heat energy required = 1 kg x 2260 KJ/Kg = 2260 KJ.



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