12. Water has Tc=374C and Pc=22,089kPa. a) Illustrate the phase diagram of water (7 marks) b) Label all the points of interest in (a) (6 marks) c) Identify the phase present under the condition T=110C,P=0.5kPa (2 marks) 13. Identify the attractive forces must be overcome to a) sublime solid of iodine b) convert liquid NH3 (liquid) to NH3 (vapour)