Problem 1 (Octave Levenspiel) A 10-minute experimental run shows that 75% of liquid reactant is converted to product by a half-order rate. What would be the fraction converted in a half-hour run?
Problem 2 (Octave Levenspiel) After 8 minutes in a batch reactor reactant (CA0 = 1 mol/L) is 80% converted; after 18 minutes, conversion is 90%. Find a rate equation to represent this reaction.
Problem 3 (Octave Levenspiel) Aqueous A at a concentration of CA0 = 1 mol/L is introduced into a batch reactor where it reacts away to form product R according to stoichiometry
A → R
The concentration of A in the reactor is monitored at various times, as shown below-
Time, min CA, mol/m3
0 1000
100 500
200 333
300 250
400 200
(a) For CA0 = 500 mol/m3 find the conversion of reactant after 5 hours in the batch reactor.
(b) Find the rate expression for the reaction.