Chemical Engineering - Chemical Reaction Engineering - Discussion
Discussion Forum : Chemical Reaction Engineering - Section 6 (Q.No. 38)
38.
Pick out the wrong statement
For the same conversion, the holding time required in a batch reactor, is always equal to the space time required in a PFR.
Two mixed reactors of unequal size are available for producing a specified product, formed by a homogenous second order reaction. To achieve maximum production rate, the smaller reactor should be placed in series before the larger reactor.
Arrehenius equation describing the effect of temperature on rate constant is given by, K = A.e-Ea/RT
The mechanism for the decomposition of CH3CHO into CH4 and CO in presence of I2 is:
CH3CHO +I2
CH3I + HI + CO; slow
CH3I + HI CH4 + I2; fast
Then the rate of disappearance of CH3CHO is equal to K.CCH3I.CHI and acts as a catalyst.
CH3CHO +I2
CH3I + HI + CO; slowCH3I + HI
CH4 + I2; fastThen the rate of disappearance of CH3CHO is equal to K.CCH3I.CHI and acts as a catalyst.
Discussion:
3 comments Page 1 of 1.
Alpesh Solanki said:
5 years ago
What about B? Please explain.
John said:
4 years ago
B is also wrong, No matter what arrangement you used you'll always get same conversion.
Even in A, it's only equivalent when the fractional change in volume is zero.
Even in A, it's only equivalent when the fractional change in volume is zero.
Surya said:
3 years ago
D is right. Because rate depends on slow step.
B is wrong. Because first small CSTR is to be used because of high concentration of reactant.
B is wrong. Because first small CSTR is to be used because of high concentration of reactant.
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