ChE-3700
Homework
Assignment
No. 1
Due: 01-18, Wed
Problem 1-17
Assignment No. 2
Due: 01-20, Fri
A tank contains 50 liters of salt solution. The initial concentration of the salt is 10 g/L. At time = 0, pure water is fed into the tank at the rate of 1 L/minute. At the same time the liquid in the tank is withdrawn through a pipe connected at the bottom of the tank. The flow rate through this pipe is v = (0.01)V, L/minute, where V is the volume of liquid in the tank. The liquid is well agitated. The density of liquid stays constant. There is no chemical reaction.
(a) Using Polymath, determine the amount of the salt, the concentration of the salt, and volume of liquid in the tank when time = 100 minutes. Consider mole balance on salt and overall mass balance in terms of liquid volume (V).
(b) Repeat part (a) by hand calculation. Hint: Take NA (not CA ) as the dependent variable.
2. Problem 1-15
Due: 01-23, Mon
Problem 2-7
Assignment No. 4
Due: 01-27, Fri
Problem 3-17
Additional Question: (c) Calculate the reaction time to achieve 50% conversion. Use polymath.
Assignment No. 5
Due: 01-30, Mon
Problem 3-11 (a) and (b). Consult Eq.3-21 in part (a) to calculate k value at a different temperature. Choose proper R value so that E/RT becomes dimensionless.
The reactor is CSTR in part (a) if not specified in your book.
Assignment No. 6
Due: 02-01, Wed
Problem 3-11 (c), (d)
Note: Change the units of kB in part (d) to : kB = 55 L3/(Kgcat)(minute)(Mol)2
Problem 3-7 (b)
Assignment No. 7
Due: 02-03, Fri
Problem 3-16
Problem 4-7 (a), (b), (e)
Notes: Ignore cost in part (e). Change Table 4-1 to Table 4-3.
Due: 02-06, Mon
1. Derive Eq. 4-17, p. 170. Show derivation procedure.
2. Problem 4-7 (f) with a correction: (a) through (c) ----- (a), (b), & (e). Use Polymath where necessary.
Assignment No. 9
Due: 02-08, Wed
Problem 4-11
Problem 4-13