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Chemical Reaction Engineering

Chemical Reaction Engineering
For the reaction, A + B → 2B + C,

rA = rB
rA = rB/2
rA = 2rB
rA = -rB

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Chemical Reaction Engineering
For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹? Assume that all the other operating conditions are the same for CSTR and PFR.

0.3
0.6
0.15
0.9

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Chemical Reaction Engineering
If in the gaseous phase reaction, N₂O₄ ⇋ 2NO₂, x is the part of N₂O₄ which dissociates, then the number of molecules at equilibrium will be

(1 + x)²
(1 + x)
(1 - x)²
(1 - x)

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Chemical Reaction Engineering
Holding time for flow reactors is __________ the space time, for constant fluid density

Equal to
Triple
None of these
Double

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Chemical Reaction Engineering
A back mix reactor is

Same as plug flow reactor (PFR)
Same as ideal stirred tank reactor
Suitable for gas phase reactions
Ideal at very low conversion

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Chemical Reaction Engineering
Threshold energy in a reaction is equal to the

Normal energy of reactants
Neither A nor B
Sum of A & B
Activation energy

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