Answers edited by Truong-Son N.

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• Is hyponitrite polar or nonpolar?
  
• Consider the following sets of quantum numbers. Circle all of the allowed sets of quantum numbers for an electron in a hydrogen atom. The electron may be either in a ground state or an excited state?
  
• Why are carbocations positive?
  
• A Lewis structure, based on Kekule’s proposed structure for the benzene molecule, is shown to the right. Explain in no more than 3 sentences why this error is so large?
  
• What does isothermal expansion mean?
  
• Why are the electronegativity values of noble gases zero?
  
• Why is it that d-block metals occupy the #d# orbitals a lot of the time, whereas f-block metals occupy the #d# orbitals much less often? Can electronic transitions occur within the valence space of f-block elements?
  
• Is #C_2 ^-#paramagnetic or diamagnetic?
  
• What is #int arcsinx/sqrt(1+x^2) dx#?
  
• For the reaction #X + Y -> Z#, the following data was obtained. Answer the following questions? Is there any missing info I need to do this?? What is the best way to learn kinetics?
  
• How do you find the local extrema for #f(x)= x^4-4x³#?
  
• Which of the following ethers cannot initiate radical peroxide formation?
  
• Why is it necessary to standardize solutions of #"EDTA"# in complexometric titrations?
  
• Is #Be_2^+# diamagnetic or paramagnetic?
  
• What bases are purines?
  
• Is B(OH)3 a lewis base?
  
• What are the nodal planes of the #d_(x^2-y^2)# orbital?
  
• Which electrons are easiest to give away from an atom? Of these, are lone pairs or bonding pairs of electrons easier to give away? What orbitals are they in?
  
• Is boron trihydride (#"BH"_3#) a base?
  
• How do the bond angles compare for #"ClO"_2#, #"ClO"_2^(-)#, and #"Cl"_2"O"#? Explain why.
  
• How can you model half life decay?
  
• Is HCl is a strong base or acid?
  
• Find the equilibrium constant for a 3-electron transfer process, whose standard emf is #"0.59 V"# at #"298.15 K"#? #F = "96485.33 C/mol e"^(-)#
  
• What is a disproportionation reaction?
  
• Suppose that to #"50 cm"^3# of #"0.2 N HCl"# was added #"50 cm"^3# of #"0.1 N NaOH"#. What volume of #"0.5 N KOH"# should be added to neutralize the #"HCl"# completely?
  
• Why is the IR spectrum inverted?
  
• How do you name #"Nd"_2"Fe"_(14)"B"#?
  
• How many sigma and pi bonds are in allylcyanide?
  
• Do chemists count atoms and molecules?
  
• Question #079ac
  
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