a 1. Iron comes in a few allotropes based on its crystal structure: alpha iron (a) (ferrite), gamma iron (Y) (austenite), delta iron (8), and at very high pressures epsilon iron (8) hexaferrum. Use the phase diagram for iron to answer the following (credit: Diagramma_di_fase_del_ferro puro.svg: Daniele Pugliesi) T(C) 3000 2000 HRC 1500 on (PCC) 1000 co 10 10 1010 1 10 100 Phar) a. What is the lowest temperature you'd have to make a forge to make iron boil? b. At what pressure would the answer to question a occur? Is this under high pressure or a vacuum? c. What temperature and pressure is the triple point(place where solid, liquid and gas are in equilibria)? d. Which allotrope of solid iron has the highest potential energy of its particles? Use the sublimation temperatures to support your