Additional Homework Problems

1. CDP3-A_B Data on the tenebrionid beetle whose body mass is 3.3g shows it can push a 35g ball of dung at 6.5 cm/s at 27 C, 13 cm/s at 37 C and 18 cm/s at 40 C. How fast can it push at 41.5 C (Heinrich, B., The Hot-Blooded Insects. Harvard Press, Cambridge, 1993). (Solution Included)
2. CDP3-B_B Use the Polanyi-Semenov equation to estimate activation energies. [3rd Ed. P3-20]
3. CDP3-C_B Given the irreversible rate law at low temperature, write the reversible rate law at high temperature. [3rd Ed. P3-10]

4. CDP3-D_A Set up the stoichiometric table for

   4NH₃ + 5O₂ 4NO + 6H₂O

   in terms of molar flow rates

   [Solution] [3rd Ed. P3-13]

5. CDP3-E_B Set up a stoichiometric table for the reaction:
   

   

   (Solution Included)

6. CDP3-F_B The elementary reaction A(g) + B(l) C(g) takes place in a square duct containing liquid B, which evaporates into the gas reacting with A. [2nd Ed. P3-20]

7. CDP3-G_B Silicon is used in the manufacture of microelectronic devices. Set up a stoichiometric table for the reaction:
   

   SiHCl₃(g) + H₂(g)Si(s) + HCl(g) + Si_xH_gCl_z(g)

   (Solution Included) [2nd Ed. P3-16(a)]

8. CDP3-H_B Reactions with Condensation between chlorine and methane. [3rd Ed. P3-21]
9. CDP3-I_B Reactions with condensation

   C₂H₆(g) + 2Br(g) C₂H₄Br₂(l,g) + 2HBr(g)

   [3rd Ed. P3-22]
10. CDP3-J_B Chemical vapor deposition

    3SiH₄(g) + 4NH₃(g) Si₃N₄(s) + 12H₂(g)

    [3rd Ed. P3-23]

11. CDP3-K_B Condensation occurs in the gas phase reaction:

    CH₄(g) + 2Cl₂(g) CH₂Cl₂(g,l) + 2HCl(g)

    [2nd Ed. P3-17]

12. CDP3-New From time to time new problems relating Chapter 3 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.