ORGANIC CHEMISTRY. please help!!! THANK YOU !!!

2. The by-product of the Wittig reaction in question 1 is triphenylphosphine oxide. This is a very stable compound. A phosphorus-oxygen bond is very strong. If you ever need to reduce a pyridine N-oxide back to pyridine, you can use this strong bond to your pyridine. How does this work? N-oxide with triphenylphosphine it is reduced to phosphorus in triphenylphosphin the first step, the N-oxide oxygen attacks the (a) (b) In the product that you have drawn in the box for part (a), what formal charge is on the phosphorus? Not the oxidation number, the formal charge. (c) To finish the arrow pushing for the overall reaction, start from the product that you drew in part (a) and think, I want to make triphenylphosphine oxide because it is very stable. Finish the reaction above by completing all of the arrow pushing