Chemical Engineering > GATE 2017 > Batch Reactor
The following gas-phase reaction is carried out in a constant-volume isothermal batch reactor
A + B β R + S
The reactants A and B as well as the product S are non-condensable gases. At the operating temperature, the saturation pressure of the product R is 40 kPa. Initially, the batch reactor contains equimolar amounts of A and B (and no products) at a total pressure of 100 kPa. The initial concentrations of the reactants are CA,0 = CB,0 = 12.5 mol/m3. The rate of reaction is given by (-rA) = 0.08 CA CB mol/m3.s. The time at which R just starts condensing, rounded to 1 decimal place, is
A + B β R + S
The reactants A and B as well as the product S are non-condensable gases. At the operating temperature, the saturation pressure of the product R is 40 kPa. Initially, the batch reactor contains equimolar amounts of A and B (and no products) at a total pressure of 100 kPa. The initial concentrations of the reactants are CA,0 = CB,0 = 12.5 mol/m3. The rate of reaction is given by (-rA) = 0.08 CA CB mol/m3.s. The time at which R just starts condensing, rounded to 1 decimal place, is
Correct : 4.0
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