Tutorial 4 q - CHEM 1A03 TUTORIAL #4 Oct 4 Oct. 9, 2009...

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CHEM 1A03 TUTORIAL #4 Oct 4 – Oct. 9, 2009 Questions – Chapter 10 _____________________________________________________________________ Page 1 of 2 The following problems (1-8) are based on material from Chapter 10 and class notes. 1. Arrange the following in terms of increasing electronegativity: (a) Mg, N, O, Si, (b) F, Se, Sn, Te 2. 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 central-atom-to-oxygen bonds in these species? c) What is the average formal charge on the oxygen 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. 3. 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,Ca(OH) 2
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Tutorial 4 q - CHEM 1A03 TUTORIAL #4 Oct 4 Oct. 9, 2009...

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