Methanol (C) is formed from carbon monoxide (A) and hydrogen (B) in the gas-phase reaction co + 2H2 = CH3OH The mole fractions of the reactive species at equilibrium satisfy the relation Yc YA端戸 YAi = Keg (T)
Methanol (C) is formed from carbon monoxide (A) and hydrogen (B) in the gas-phase reaction co + 2H2 = CH3OH The mole fractions of the reactive species at equilibrium satisfy the relation Yc YA端戸 YAi = Keg (T)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:Methanol (C) is formed from carbon monoxide (A) and hydrogen (B) in the gas-phase reaction
co + 2H2 = CH3OH
The mole fractions of the reactive species at equilibrium satisfy the relation
Ус 1
- = Keg (T)
%3D
YA唱
where P is the total pressure (atm), Keg the reaction equilibrium constant (atm-2), and T the temperature (K). The equilibrium constant
Keg equals 10.5 at 373 K, and 2.316 x 10-* at 573 K. A semilog plot of Keg (logarithmic scale) versus 1/T (rectangular scale) is
approximately linear between T= 300 K and T= 600 K.
a. What is the value of log10(Keg X (1 atm)2) at T= 423 K? i
b. Suppose you begin with a molar ratio of CO/H2 = 1.100 and no methanol. If the reaction proceeds to equilibrium at 423 K and 2 atm,
calculate the molar composition of the product and the fractional conversion of co.
i
Усо:
YH2
y CH; OH
i
Fractional Conversion: i
C. Repeat the calculation for a molar ratio of CO/H2 = 1.350.
i
Усо
YH,
Усн, он
Fractional Conversion:
i
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