Chemical Reaction Engineering
An irreversible first order reaction is being carried out in a CSTR and PFR of same volume. The liquid flow rates are same. The relative conversion will

Depend on the temperature
Be more in PFR than in CSTR
Be more in CSTR than in PFR
Be same in both cases

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Chemical Reaction Engineering
For all positive reaction orders for a particular duty,

Ratio of the volume of the mixed reactor to that of the plug-flow reactor decreases with order
Reactor size is independent of the type of flow
Density variation during reaction affects design
Mixed reactor is always larger than the plug-flow reactor

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Chemical Reaction Engineering
A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m³ ; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min⁻¹ ; (ΔH) = - 40kJ/mole; ρ = 1000kg/m³ CP = 4 J/gm.°C ; q = 10⁻³ m³/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is

1kW
2/3 kW
4kW
5/3 kW

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Chemical Reaction Engineering
Promoter.

Atlers the position of equilibrium in a reversible reaction
All of these
Initiates a chemical reaction and is a catalyst by itself
Increases the number of active centres by increasing the unevenness of catalyst surface and by creating discontinuities in the crystals

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