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Chemical Reaction Engineering

Chemical Reaction Engineering
Transition state theory gives the rate constant as

K α e-E/RT
K α eE/RT
K α T . e-E/RT
K α √T . e-E/RT

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Chemical Reaction Engineering
Which of the following is a controlling factor in very fast heterogeneous reaction?

Composition of reactant
Heat and mass transfer effects
Temperature
Pressure

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Chemical Reaction Engineering
The rate of the reaction, X → Y, quadruples when the concentration of 'X' is doubled. The rate expression for the reaction is, r = K Cxn, the value of 'n' in this case will be

2
1
3

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Chemical Reaction Engineering
A rise in temperature

Does not affect photo-chemical reaction rates
All of these
Does not affect a catalysed reaction
Normally tends to increase the reaction rate

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Chemical Reaction Engineering
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)

Decreases
Changes unpredictably
Increases
Remains unaltered

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Chemical Reaction Engineering
At a given temperature, K₁, K₂ and K3 are equilibrium constants for the following reactions 1, 2, 3 respectively. CH₄(g) + H₂O(g) ⇋ CO(g) + 3H₂(g), CO(g) + H₂O(g) ⇋ CO₂(g) + H₂(g) CH₄(g) + 2H₂O(g) ⇋ CO₂(g) + 4H₂(g) Then K₁, K₂ and K3 are related as:

K3 = K₁.K₂
K3 = (K₁.K₂)0.5
K3 = (K₁.K₂)2
K3(K₁+K₂)/2

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