Chemical Engineering :: Chemical Reaction Engineering
- Threshold energy in a reaction is equal to the
- In case of calcination of limestone, CaCO₃ CaO + CO₂, the addition of more of CaO will result in __________ in the concentration of CO₂.
- The equilibrium constant of chemical reaction __________ in the presence of catalyst.
- From among the following, choose one which is not an exothermic process.
- If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.
- 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
- Find a mechanism that is consistent with the rate equation and reaction given below: 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: - The catalytic activity of enzymes is due to their capacity to lower the __________ energy.
- For a fluidised bed reactor, the most suitable/relevant model is a __________ model.
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