Consider a reversible elementary aqueous reaction: A ↔ R . It is found that the reaction has the standard Gibbs free energy (ΔG°) of -4406 J/mol and standard enthalpy of reaction (ΔHr°) of -41570 J/mol at 25°C. The specific heats (cp )of both A and R are constant over wide range of temperature and the specific heats (Cp ) of A and R is 1000 J /mol°C. Note that this is 1st oder reversible reaction and the given initial conditions are: CA0=1 mol/L and CR0=0 mol/L in the feed stream and and FA0=100 mol/min. a)  Sketch the equilibrium conversion vs. temperature curve of the reaction between 0°C and 100°C. What restrictions should be placed on the reactor operating isothermally if we are to obtain a conversion of % 50 or higher?

Introduction to Chemical Engineering Thermodynamics
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Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Consider a reversible elementary aqueous reaction: A ↔ R . It is found that the reaction has the
standard Gibbs free energy (ΔG°) of -4406 J/mol and standard enthalpy of reaction (ΔHr°) of -41570 J/mol at 25°C. The specific heats (cp )of both A and R are constant over wide range of
temperature and the specific heats (Cp ) of A and R is 1000 J /mol°C. Note that this is 1st oder
reversible reaction and the given initial conditions are: CA0=1 mol/L and CR0=0 mol/L in the feed
stream and and FA0=100 mol/min.
a)  Sketch the equilibrium conversion vs. temperature curve of the reaction between
0°C and 100°C. What restrictions should be placed on the reactor operating isothermally
if we are to obtain a conversion of % 50 or higher?

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