According to the 'law of mass action', the rate of reaction is directly proportional to the
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Chemical Engineering · all questionsChemical Reaction Engineering
Chemical Reaction Engineering
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What is the dispersion number for a CSTR?
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For an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by
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Mean residence time is equal to the space time, when
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A space time of 3 hours for a flow reactor means that
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Which of the following will give maximum gas conversion?
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For the same residence time, which one will give the maximum conversion?
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The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is
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A typical example of an exothermic reversible reaction conducted at high pressure in industry is
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Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in __________ in conversion.
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Threshold energy in a reaction is equal to the
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In case of calcination of limestone, CaCO3 CaO + CO2, the addition of more of CaO will result in __________ in the concentration of CO2.
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The equilibrium constant of chemical reaction __________ in the presence of catalyst.
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From among the following, choose one which is not an exothermic process.
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If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.
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The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is
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Find a mechanism that is consistent with the rate equation and reaction given below:
2A + B → A2B, (-rA) = k.CA.CB
2A + B → A2B, (-rA) = k.CA.CB
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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:
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:
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The catalytic activity of enzymes is due to their capacity to lower the __________ energy.
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For a fluidised bed reactor, the most suitable/relevant model is a __________ model.
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