a. Water has the following points on the phase diagram: a triple point at 0.006 atm and 0.2C; a normal melting point at 0C and 1atm; a normal boiling point at 100C and 1atm; and a critical point at 218atm and 374C. i. Sketch the phase diagram for water with appropriate labels for all regions and lines. [4 marks] ii. Determine the values for f (number of variables) at each regions and lines using Gibb's phase role. [3 marks] iii. Explain why the slope of melting line is negative. [2 marks]