the structure of the dinitrophenylhydrazone derivative formed

Is there any way you can help me with the 2nd page’s questions?Pinacolone has a boiling point of 106oC. During the distillation of the product the distillation was stopped when the temperature of the distillate reached100oC. Why?2. Give the structure of the dinitrophenylhydrazone derivative formed frompinacolone.3. What product would be expected if benzopinacol(e) was used instead ofpinacol?