2 Replies Latest reply: Nov 7, 2002 12:00 AM by Craig-disabled RSS


      Please help!!!
      Don't just tell me to look at the program!!!
      I already read it a several times.

      Identify the five compounds of H, N, and O described below. For each compound, write a Lewis structure that is consistent with the information given.
      a. All the compounds are electrolytes, although not all of them are strong electrolytes. Compounds C and D are ionic and compound B is covalent.
      b. Nitrogen occurs in its highest possible oxidation state in compounds A and C; nitrogen occurs in its lowest possible oxidation state in compounds C, D, and E. The formal charge on both nitrogen in compound C is +1; the formal charge on the only nitrogen in compound B is 0.
      c. Compound A and E exist only in solution. Both solutions give off gases. Commericially available concentrated solutions of compound A are nominally 16 M. The commercial, concentrated solution of compound E is 15 M.
      d. Commercial soluions of compound E are labeled with a misnomer that implies that a binary, gaseous compound of nitrogen and hydrogen has reacted with water to produce ammonium ions and hydroxide ions. Actually, this reaction occurs to only a slight extent.
      e. Compound D is 43.7% N and 50.0% O by mass. If compound D were a gas at STP, it would have a density of 2.86g/L.
      f. A formula unit of compound C has one more oxygen than a formula unit of compound D. Compounds C and A have one ion in common.
      g. Solutions of compound C are weakly acidic; solutions of compound A are strongly acidic; solutions of compounds B and E are basic. The titration of 0.726g of compound B requires 21.98mL of 1.00 M HCl for complete neutralization.