Chemical Engineering :: Chemical Reaction Engineering
- A batch reactor suffers from following disadvantage.
- The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the
- In a zero order reaction, reactants concentration does not change with time and the
- Pick out the wrong statement.
- "A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A is rate controlling. The effectiveness factor of the catalyst is reported as 7/8. Which of the following statement is true?A. Inner catalyst core of radius R/8 does not participate in reaction."
- For series reaction, the relative yield
- In a reversible reaction, a catalyst increases the rate of forward reaction
- Shift conversion reaction
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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.) ? - When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is
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A.
Autocatalytic reactions are exemplified by microbial fermentation reactions |
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B.
The slowest step has the greatest influence on the overall reaction rate in case of an irreversible series reaction |
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C.
He fractional conversion at any time is same for both the constant as well as the variable volume system in case of an irreversible unimolecular type first order reaction |
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D.
Ydrolysis of ester in presence of alkali or acid is a zero order reaction |