Additional Homework Problems

Alternatve Problems
  1. CDGA 6-1A A semibatch reactor is used to carry out the reaction

  2. CDGA 6-2A A CSTR with two impellers is modeled as three CSTRs in seires.
  3. CDP6-28B Pressure drop in a PBR with a first-order reaction using real data: "What if" questions asked. [Elements 3rd Ed. P4-18]
  4. CDP6-29B Good Troubleshooting Problem. Inspector Ambercromby investigates a possible fraud at Worthless Chemical. [Elements 3rd Ed. P4-9]
  5. CDP6-30D A first order reaction is carried out in a packed bed reactor with pressure drop where the rate constant varies inversly with particle diameter. One can also choose from various pipe sizes to get the maximum conversion. [Elements 3rd Ed. P4-20]
  6. CDP6-31B Pressure drop in a packed bed reactor to make alkylated cyclohexanols. [Elements 3rd Ed. P4-22]
Batch Reactors
  1. CDP6-DB A batch reactor is used for the bromination of p-chlorophenyl isopropyl ether. Calculate the batch reaction time. [Elements 2nd Ed. P4-29]
  2. CDP6-EB California Professional Engineers Exam Problem, in which the reaction

    B + H2A

    is carried out in a batch reactor. [Elements 2nd Ed. P4-15]

  3. CDP6-FA Verify that the liquid-phase reaction of 5, 6-benzoquinoline with hydrogen is psuedo-first-order. [Elements 2nd Ed. P4-7]
Flow Reactors
  1. CDP6-GB Radial flow reactors can be used to good advantage for exothermic reactions with large heats of reaction. The radical velocity varies as:

    Vary the parameters and plot X as a function of r. [Elements 2nd Ed. P4-31]

  2. CDP6-HA Designed to reinforce the basic CRE principles through very straight forward calculations of CSTR and PFR volumes and batch reactor time. This problem was one of the most often assigned problems from the 2nd Edition. [Elements 2nd Ed. P4-4]
  3. CDP6-IB Formation of diphenyl in a batch, CSTR, and PFR. [Elements 3rd Ed. P4-10B]
Packed Bed Reactors
  1. CDP6-JB n-Pentane->i-pentane in a packed bed reactor. [Elements 3rd Ed. P4-21B]
  2. CDP6-KC Packed bed spherical reactor. [Elements 3rd Ed. P4-24]
  3. CDP6-LB The reaction A B is carried out in a membrane reactor where B diffuses out. [Elements 3rd Ed. P4-30]
Recycle Reactors
  1. CDP6-MB The overall conversion is required in a packed-bed reactor with recycle. [Elements 2nd Ed. P4-22]
  2. CDP6-NC Excellent reversible reaction with recycle. Good problem by Professor H. S. Shankar. IIT-Bombay. [Elements 3nd Ed. P4-28C]
These Problem were on the CD-ROM for 3rd Edition but not in the book
  1. CDP6-QA The gas-phase reaction A + 2B2D has the rate law -rA = 2.5 CA0.5CB. Reactor volumes of PFRs and CSTRs are required in this mulitpart problem. [Elements 2nd Ed. P4-8]
  2. CDP6-RB What type and arrangement of flow reactors should you use for a decomposition reaction with the rate law -rA = k1CA0.5 / (1 + k2CA)? [Elements 1st Ed. P4-14]
  3. CDP6-SB The liquid-phase reaction 2A + BC + D is carried out in a semibatch reactor. Plot the conversion, volume, and species concentrations as a function of time. Reactive distillation is also considered in part (e). [Elements 2nd Ed. P4-27]
  4. CDP6-TB The growth of a bacterium is to be carried out in excess nutrient. nutrient + cellsmore cells + product The growth rate law is:
    [Elements 2nd Ed. P4-35]
  5. CDP6-UB California Registration Examination Problem. Second-order reaction in different CSTR and PFR arrangements. [Elements 2nd Ed. P4-11]
  6. CDP6-VB An unremarkable semibatch reactor problem, but it does require assessing which equation to use. [Elements 4th Ed.]
New Problems on the Web
  1. CDP6-New From time to time new problems relating Chapter 6 material to everyday interests or emerging technologies will be placed on the web. Solutions to these problems can be obtained by e-mailing the author.