Liquid ethanol (C2H5OH) at 25°C, 1 atm enters an insulated reactor operating at steady state and burns completely with air entering at 370 K, 1 atm. The combustion products exit at 1200 K. Kinetic and potential energy effects can be neglected and the air can be modeled as 21% O2 and 79% N2 on a molar basis. Determine the percent excess air used.

Liquid ethanol (C2H5OH) at 25°C, 1 atm enters an insulated reactor operating at steady state and burns completely with air entering at 370 K, 1 atm. The combustion products exit at 1200 K. Kinetic and potential energy effects can be neglected and the air can be modeled as 21% O2 and 79% N2 on a molar basis. Determine the percent excess air used.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A hot benzene vapor stream at 500oC and 1 bar is rapidly cooled by mixing with liquid benzene at 25oC and 1 bar. The stream leaving the mixer must be 200oC and 1 bar. Assume the reactor is at constant volume. Determine the flow rate (in mol/hr) of the liquid benzene feed stream assuming the flow rate of the hot benzene vapor stream is fixed at a certain value x (specified in the quiz question). Use the polynomial approximations for heat capacity and Table B.20 when appropriate. Assume the flow rate of the hot benzene vapor stream is fixed at 1,253 mol/hr and the liquid benzene feed stream is your reference state. What flow rate (mol/hr) of the liquid benzene feed stream must be used? Round your answer to the nearest tenth and do not include units. Use Tables B.17 and B.20 to tabulate relevant data. Remember that temperatures for polynomial heat capacities are in Kelvin.
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Hydrogen gas (H2) at 25°C, 1 atm enters an insulated reactor operating at steady state and reacts with 250% excess oxygen entering at 227°C, 1 atm. The products of combustion exit at 1 atm. Determine the temperature of the products, in K, if combustion is complete.