1e03-tut6-q

1e03-tut6-q - 2 O 4 2-. b) What is the average...

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CHEM 1E03 TUTORIAL # 6 _____________________________________________________________________ Page 1 of 1 1. For the following anions: SO 3 2 , CO 3 2 , NO 3 , ClO 3 , and ClO 2 . a) Draw Lewis structures and resonance forms. b) What are the average bond orders for the X-O bonds in these species? c) What is the average formal charge on the O atoms in each of these species? d) Indicate whether the species is an exception to the octet rule (i.e. it has more than an octet of electrons around one of the atoms). e) Give the VSEPR AB n E m classes. f) Predict the shapes of the anion. 2. Oxalic acid, (COOH) 2 , has two ionizable hydrogens and contains a carbon-carbon single bond. When one mole of oxalic acid reacts with one mole of calcium hydroxide, calcium oxalate, CaC 2 O 4 , is formed. a) Draw adequate Lewis structures for the oxalate ion, C
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Unformatted text preview: 2 O 4 2-. b) What is the average carbon-oxygen bond order in the oxalate ion? c) What is the average formal charge on each oxygen atom in the oxalate ion? d) Give the geometry around the C atoms in the oxalate ion. 3. N 2 O has a linear, unsymmetrical structure that may be thought of as a hybrid of two resonance structures. Draw the two resonance forms of N 2 O. 4. Phosphoric acid, H 3 PO 4 , contains three O-H bonds. When one mole of phosphoric acid reacts with one mole of sodium hydroxide, sodium dihydrogen phosphate, NaH 2 PO 4 , results. a) Draw adequate Lewis structures for H 3 PO 4 and H 2 PO 4 − . b) Calculate bond orders for all the phosphorus-oxygen bonds of H 3 PO 4 and H 2 PO 4 − . c) Calculate the formal charges on each O atom in H 3 PO 4 and H 2 PO 4 − ....
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This document was uploaded on 03/29/2012.

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