4. Write the full and net ionic equations for the following (8 points, 2 points each): a) HCI/AgNO, b) HCI/Na/CO, c) Ba(NO), Na SO, d) Ba(NO), NaCl 5. In the reaction of sulfuric acid with the battery in section 4. gas formation should have been observed at both needles. What does this say about the gas formation relative to the oxidation and reduction half reactions? Write the chemical equation for the decomposition of sulfuric acid using the 9V battery (note that sulfate ion is not involved in this reaction). Indicate the oxidation numbers for all atoms which change during the reaction and indicate which compounds are oxidized and which are reduced. (6 points)