Assignment 6 2010 - Given that iodide readily reacts with...

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2010 Chemistry 2353 Assignment 6 1. ( 4 points) BeCl 2 in the molten state is a poor conductor of electricity. What does this suggest about the bonding of solid BeCl 2 ? Suggest a structure for solid BeCl 2 and explain your reasoning. 2. (4 points) You have a white solid that could be either Mg(OH) 2 or Al(OH) 3 . What chemical procedure could be used to distinguish the two solids? 3. (4 points) a) The usual product when a halogen (strong oxidizing agent) reacts with a Group 13 metal is the trihalide. In the case of Tl, the trihalide tends to lose chlorine: TlCl 3 40 C TlCl + Cl 2 . Suggest why this reaction might occur. b) (2 points) Thallium iodide, TlI 3 is prepared from Tl 3+ and iodide, I - . Tl 3+ is a strong oxidizing agent and will oxidize iodide.
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Unformatted text preview: Given that iodide readily reacts with the oxidation product, iodine, to forms I 3-, suggest, with explanation, the most likely oxidation state for Tl in TlI 3 . 4. (4 points) Why are multiwalled carbon nanotubes electronically conductive? 5. (4 points) Is it correct to say that the physical state of CO 2 and of SiO 2 at 25 C and 1 atm directly reflects the C to O or O to Si bond strength ? 6. (4 points) Explain why all the hydrogens in diborane are not equivalent. 8. (4 points) Why would unscrupulous manufacturers of infant formula or dog food add melamine (yes, the stuff in countertops and cabinets) to their food products?...
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