Chemical Engineering - Chemical Reaction Engineering - Discussion
Discussion Forum : Chemical Reaction Engineering - Section 3 (Q.No. 43)
43.
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
Discussion:
3 comments Page 1 of 1.
Ched said:
1 year ago
The answer should be (D).
At const V: X = 1 - (CA/CA0).
At varying volume: X = [1-(CA/CA0)]/(1+(eCA/CA0)].
e is your fractional change in volume and its value can be positive or negative depending on the coefficients of the reactant and product. With this, conversion can be more or less.
For the first order, the fractional conversion is the same if the coefficient of the product is 1 and less if it is more than 1.
At const V: X = 1 - (CA/CA0).
At varying volume: X = [1-(CA/CA0)]/(1+(eCA/CA0)].
e is your fractional change in volume and its value can be positive or negative depending on the coefficients of the reactant and product. With this, conversion can be more or less.
For the first order, the fractional conversion is the same if the coefficient of the product is 1 and less if it is more than 1.
KRR said:
3 years ago
Epsilon value will be zero for a first-order reaction. So, the kinetics equation will be the same for both.
Rahul said:
9 years ago
Because the kinetics equation is same for first order reaction in the case of constant volume as well as variable volume system.
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