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CHEMICAL REACTION ENGINEERING

Chemical Reaction Engineering
The following gas phase reactions are carried out isothermally in a CSTR.A → 2R ; r₁ = K₁pA ;K₁ = 20mole/(sec.m³ bar)A → 3S ; r₂ = K₂ pA ;K₂ = 40mole/ (sec.m³ .bar)What is the maximum possible value of FR(mole/sec.) ?

43832
43864
2
43833

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Chemical Reaction Engineering
When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is

1
> 1
< 1

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Chemical Reaction Engineering
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

L√(K/D1)
1
1/(L√(K/D1))
∞

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Chemical Reaction Engineering
The performance equations for constant density systems are identical for

P.F.R, batch reactor and backmix reactor
P.F.R. and batch reactor
Batch reactor and backmix reactor
P.F.R. and backmix reactor

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Chemical Reaction Engineering
During manufacture of H₂SO₄, the oxidation of SO₂ to SO₃ by oxygen is an en- dothermic reaction. The yield of SO₃ will be maximised, if the

Pressure is reduced
Temperature is increased
Temperature is reduced and pressure is increased
Temperature is increased and pressure is reduced

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