1. Use the following Latimer diagram to determine the standard reduction potential for H2O + 2e → OH+H in basic solution. 0 -1 -0.828 H2O -2.25 H2 H 2. Sodium is very reactive in water and therefore is kept in an oil to avoid moisture. (a) Write the complete chemical equation for a reaction between sodium metal and water (b) You will notice this reaction is a redox reaction. Which one is the reducing agent? And is H 0 being oxidized or being reduced? (c) Recall that we built a MO diagram for H:0 when we discussed the MO theory in a previous chapter. If an electron from Na goes to H-0, then will it go to HOMO or LUMO of H.O? Will this electron transfer make H20 more stable or less stable? (d) How many mL of H, will be produced under standard conditions (STP) if 5.0 grams of sodium reacted completely with water? 3. points) Carbon in IVA can form carbide ion (C), dicarbide ion (Cz?), or tricarbide ion (Cs). They form compounds with some metal ions such as calcium ion. (a) write down the chemical formulas of compounds formed between calcium ions and the above-mentioned three carbide ions. (b) write down balanced chemical equations for their reactions with water. (c) The crystal structure of the compound between calcium and dicarbide ions is shown below, in which grey balls stand for Catoms and black balls are for Ca. What is the Bravais lattice and how many calcium and carbon atoms in each unit? 4. (5 points) Describe the industrial method to make H.SO. from elemental S. 5. The following diagram shows one conformation of 1,2-diiododisilane. *** H Si H (a) What is the point group? (b) How many Si-H vibrations are IR active? Show your work to receive full credits.