A mixture of mole fraction 0.500 ethanol and 0.500 water at 25 ºC is fed continuously to a vessel at a rate of 500 kg/hr. The liquid is partially vaporized to a vapor with mole composition of 0.832 ethanol, with the remaining liquid 0.127 ethanol. Both the liquid and vapor exiting streams have a temperature of 71 ºC 1. Write the appropriate energy balance with cancelled terms. 2. how much heat must be transferred to the mixture?

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