Chemical Engineering :: Chemical Reaction Engineering
- In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is
- The concentration of A in a first order reaction, A → B, decreases
- A second order reaction of the form A + B → C is called a pseudo-first order reaction, when
- Pick out the correct statement.
- Arrhenious equation represents graphically the variation between the __________ and temperature.
- Helium-mercury method is used for the measurement of the __________ of the catalyst.
- Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction.
- The value of 'n' for a chemical reaction A → B, whose reaction rate is → CAn, will be __________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled.
- The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature))
- Variables affecting the rate of homogeneous reactions are
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A.
A lower temperature favours the reaction of lower activation energy |
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B.
The dispersion number for a reactor/vessel is uL/D |
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C.
The rate controlling step in a reaction involving many steps is the fastetst step |
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D.
Pore volume and porosity of a catalyst is measured by Brunaver-Emmet-Teller (BET) technique |