06_midterm_answers

06_midterm_answers - NE 122 Midterm Feb 10th/06 1 Name ID H...

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1 ID H 2.1 Li 1.0 Be 1.5 B 2.0 C 2.5 N 3.0 O 3.5 F 4.0 Na 0.9 Mg 1.2 A l 1.5 Si 1.8 P 2.1 S 2.5 Cl 3.0 B r 2.8 I 2.5 1) Give the general structures for the following names: alcohol ester aldehyde amine ketone ether carboxylic acid carboxylic acid anhydride 2) Draw the Lewis dot diagram for CO 3 2- . Show charges on atoms. 3) Sodium cyanate, NaOCN, is used mainly as a herbicide to destroy weeds in lawns. How may pi bonds does NaOCN possess? 4) Put formal charges on the nitrogen or oxygen atoms in the following molecules? Lone pairs have not been drawn. All atoms have complete octets. If the atom has no formal charge put a zero beside it. N O H N O O NO O
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NE 122 Midterm Feb 10 th /06 Name 2 ID 5) Which of the following compounds is a tertiary amine? 6a) Draw the lowest π molecular orbital potential energy diagram (no nodes) for furan. Clearly show the orbitals of the oxygen’s lone pair electrons. O furan b) In total how many π molecular orbital would furan have? 7) Circle the compounds that are aromatic.
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06_midterm_answers - NE 122 Midterm Feb 10th/06 1 Name ID H...

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