SECTION D Answer all 3 questions (3 x 4 = 12 Marks) 1. a. Define colligative properties. (1.5 mark) b. Nitrogen (N) and phosphorus (P) are Group V (Periodic table) elements. Explain why N formed only three bonds, whereas; P can make 3 and 5 bonds? (2.5 Marks) 2. Reaction is given below (4 Marks) 2NH, (g) N, (g) + 3H, (g) Calculate Kc for the reaction if Kp of the given reaction is 2 atmat 300 C (R=0.0821 liter atm/mol K)