Ethanol is burnt with required amount of O2 at atmospheric pressure, the conversion of ethanol is 100%, what is the pressure at due point?(a) 0.2 atm(b) 0.4 atm(c) 0.6 atm(d) 0.8 atmThe question was posed to me in an interview.Query is from Saturation topic in section Real Gases: Equations of State, Single Component Two Phase Systems, Saturation & Condensation of Basic Chemical Engineering

Ethanol is burnt with required amount of O2 at atmospheric pressure, t

1.	Ethanol is burnt with required amount of O2 at atmospheric pressure, the conversion of ethanol is 100%, what is the pressure at due point?(a) 0.2 atm(b) 0.4 atm(c) 0.6 atm(d) 0.8 atmThe question was posed to me in an interview.Query is from Saturation topic in section Real Gases: Equations of State, Single Component Two Phase Systems, Saturation & Condensation of Basic Chemical Engineering
Answer» Right choice is (c) 0.6 atm Explanation: C2H5OH + 3O2 -> 2CO2 + 3H2O, Basis: 100 moles of ETHANOL, => moles of O2 reacted = 300, => Product CONTAINS, moles of CO2 = 200, H2O = 300, fraction of H2O = 0.6, => PRESSURE at due point = 0.6*1 = 0.6 atm.

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