no probs, last exam of colledge to excited and cant sleep anyways hahah.
anyhow this is application i think . its a different salt although its an aldehyde. im not sure why but if you think about it logically its not elimination cause double bond not form and its not substituition either cause nothing is lost . two of the same thing added together form a polymer which has the same number of carbon and oxygen and hydrogen . if anything it could be addition polymerisation but thats A2. anyhow so you can deduce its only addition .
in the second part a double bond is orm so clearly is elimination
